`ModuleNotFoundError: No module named 'omni.isaac.core'` suddenly appearred

Hi,

I suddenly got an below errors, though I can run my codes well just before.

How can I fix it?

Warp 0.6.3 initialized:
   CUDA Toolkit: 11.5, Driver: 12.0
   Devices:
     "cpu"    | x86_64
     "cuda:0" | NVIDIA GeForce RTX 3090 (sm_86)
   Kernel cache: /home/bak/.cache/warp/0.6.3
[1.784s] [ext: omni.syntheticdata-0.2.4] startup
2023-06-22 12:30:20 [1,786ms] [Warning] [omni.kit.viewport.menubar.core.menu_item.viewport_menu_item] ViewportMenuItem order argument is deprecated, use order_setting_path
[1.794s] [ext: omni.isaac.dynamic_control-1.2.3] startup
[1.800s] [ext: omni.replicator.core-1.7.8] startup
2023-06-22 12:30:20 [1,806ms] [Warning] [omni.replicator.core.scripts.annotators] Annotator PostProcessDispatch is already registered, overwriting annotator template
[1.876s] [ext: omni.isaac.core-1.46.3] startup
2023-06-22 12:30:20 [1,920ms] [Error] [omni.ext._impl._internal] Failed to import python module omni.isaac.core from /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core. Error: invalid syntax (rigid_prim_view.py, line 81). Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py", line 163, in _custom_importer
    return _import_public(ext_module.path, ext_module.name, reload_enabled)
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py", line 84, in _import_public
    module = import_module(module_name)
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core/omni/isaac/core/__init__.py", line 11, in <module>
    from omni.isaac.core.world.world import World
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core/omni/isaac/core/world/__init__.py", line 9, in <module>
    from omni.isaac.core.world.world import World
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core/omni/isaac/core/world/world.py", line 18, in <module>
    from omni.isaac.core.scenes.scene import Scene
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core/omni/isaac/core/scenes/__init__.py", line 9, in <module>
    from omni.isaac.core.scenes.scene import Scene
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core/omni/isaac/core/scenes/scene.py", line 11, in <module>
    from omni.isaac.core.prims import geometry_prim_view
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core/omni/isaac/core/prims/__init__.py", line 14, in <module>
    from omni.isaac.core.prims.rigid_prim import RigidPrim
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core/omni/isaac/core/prims/rigid_prim.py", line 10, in <module>
    from omni.isaac.core.prims.rigid_prim_view import RigidPrimView
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core/omni/isaac/core/prims/rigid_prim_view.py", line 81
    : str,
    ^
SyntaxError: invalid syntax

2023-06-22 12:30:20 [1,920ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.core' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:20 [1,920ms] [Error] [omni.ext.plugin] [ext: omni.isaac.core-1.46.3] Failed to startup python extension.
[1.999s] [ext: omni.kit.manipulator.viewport-104.0.7] startup
[2.002s] [ext: omni.isaac.core_nodes-0.23.2] startup
2023-06-22 12:30:20 [1,999ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.core_nodes. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core_nodes/omni/isaac/core_nodes/__init__.py", line 1, in <module>
    from .impl import Extension
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core_nodes/omni/isaac/core_nodes/impl/__init__.py", line 7, in <module>
    from .extension import Extension
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core_nodes/omni/isaac/core_nodes/impl/extension.py", line 15, in <module>
    from omni.isaac.core.utils.stage import get_current_stage
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:20 [1,999ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.core_nodes' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.core_nodes' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:20 [1,999ms] [Error] [omni.ext.plugin] [ext: omni.isaac.core_nodes-0.23.2] Failed to startup python extension.
[2.078s] [ext: omni.isaac.cloner-0.4.1] startup
[2.078s] [ext: omni.isaac.lula-1.2.1] startup
[2.084s] [ext: omni.graph.visualization.nodes-2.0.0] startup
[2.089s] [ext: omni.isaac.debug_draw-0.2.3] startup
[2.092s] [ext: omni.isaac.gym-0.3.3] startup
[2.093s] [ext: omni.graph.window.action-1.5.5] startup
[2.093s] [ext: omni.isaac.ui-0.8.0] startup
2023-06-22 12:30:20 [2,089ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.ui. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.ui/omni/isaac/ui/__init__.py", line 11, in <module>
    from .print_to_screen import ScreenPrinter
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.ui/omni/isaac/ui/print_to_screen.py", line 12, in <module>
    from omni.isaac.core.utils.prims import is_prim_path_valid, delete_prim
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:20 [2,089ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.ui' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.ui' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:20 [2,089ms] [Error] [omni.ext.plugin] [ext: omni.isaac.ui-0.8.0] Failed to startup python extension.
[2.168s] [ext: usdrt.scenegraph-4.3.2] startup
[2.179s] [ext: omni.isaac.motion_planning-0.2.2] startup
2023-06-22 12:30:20 [2,178ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.motion_planning.tests. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.motion_planning/omni/isaac/motion_planning/tests/__init__.py", line 10, in <module>
    from .test_motion_planning import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.motion_planning/omni/isaac/motion_planning/tests/test_motion_planning.py", line 20, in <module>
    from omni.isaac.core.utils.stage import open_stage_async
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:20 [2,178ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.motion_planning.tests' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.motion_planning' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:20 [2,178ms] [Error] [omni.ext.plugin] [ext: omni.isaac.motion_planning-0.2.2] Failed to startup python extension.
[2.257s] [ext: omni.isaac.surface_gripper-0.4.0] startup
2023-06-22 12:30:20 [2,252ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.surface_gripper. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.surface_gripper/omni/isaac/surface_gripper/__init__.py", line 12, in <module>
    from .scripts import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.surface_gripper/omni/isaac/surface_gripper/scripts/__init__.py", line 10, in <module>
    from .surface_gripper import SurfaceGripper
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.surface_gripper/omni/isaac/surface_gripper/scripts/surface_gripper.py", line 11, in <module>
    from omni.isaac.core.utils.stage import add_reference_to_stage
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:20 [2,252ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.surface_gripper' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.surface_gripper' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:20 [2,252ms] [Error] [omni.ext.plugin] [ext: omni.isaac.surface_gripper-0.4.0] Failed to startup python extension.
[2.331s] [ext: omni.isaac.range_sensor-0.8.1] startup
2023-06-22 12:30:20 [2,328ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.range_sensor. Error: No module named 'omni.isaac.ui'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.range_sensor/omni/isaac/range_sensor/__init__.py", line 10, in <module>
    from .scripts.extension import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.range_sensor/omni/isaac/range_sensor/scripts/extension.py", line 16, in <module>
    from .menu import RangeSensorMenu
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.range_sensor/omni/isaac/range_sensor/scripts/menu.py", line 13, in <module>
    from omni.isaac.ui.menu import make_menu_item_description
ModuleNotFoundError: No module named 'omni.isaac.ui'

2023-06-22 12:30:20 [2,328ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.range_sensor' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.range_sensor' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:20 [2,328ms] [Error] [omni.ext.plugin] [ext: omni.isaac.range_sensor-0.8.1] Failed to startup python extension.
[2.405s] [ext: omni.isaac.motion_generation-4.5.6] startup
2023-06-22 12:30:20 [2,400ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.motion_generation. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/__init__.py", line 10, in <module>
    from omni.isaac.motion_generation.articulation_motion_policy import ArticulationMotionPolicy
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/articulation_motion_policy.py", line 12, in <module>
    from .motion_policy_interface import MotionPolicy
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/motion_policy_interface.py", line 10, in <module>
    from omni.isaac.motion_generation.world_interface import WorldInterface
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/world_interface.py", line 11, in <module>
    import omni.isaac.core.objects
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:20 [2,400ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.motion_generation' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.motion_generation' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:20 [2,400ms] [Error] [omni.ext.plugin] [ext: omni.isaac.motion_generation-4.5.6] Failed to startup python extension.
[2.477s] [ext: omni.isaac.manipulators-1.1.0] startup
2023-06-22 12:30:20 [2,471ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.manipulators. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.manipulators/omni/isaac/manipulators/__init__.py", line 9, in <module>
    from omni.isaac.manipulators.single_manipulator import SingleManipulator
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.manipulators/omni/isaac/manipulators/single_manipulator.py", line 11, in <module>
    from omni.isaac.core.articulations.articulation import Articulation
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:20 [2,471ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.manipulators' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.manipulators' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:20 [2,471ms] [Error] [omni.ext.plugin] [ext: omni.isaac.manipulators-1.1.0] Failed to startup python extension.
[2.609s] [ext: omni.isaac.sensor-5.6.3] startup
2023-06-22 12:30:21 [2,603ms] [Warning] [omni.ext.plugin] [ext: omni.isaac.sensor-5.6.3] Native plugin search dir contains several files: /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.sensor/bin . It makes dir walk slow, replace with the exact path to the plugin instead of a wildcard.
2023-06-22 12:30:21 [2,625ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.sensor. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.sensor/omni/isaac/sensor/__init__.py", line 10, in <module>
    from .scripts.extension import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.sensor/omni/isaac/sensor/scripts/extension.py", line 15, in <module>
    from .menu import IsaacSensorMenu
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.sensor/omni/isaac/sensor/scripts/menu.py", line 11, in <module>
    from omni.isaac.core.utils.prims import set_prim_visibility
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:21 [2,625ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.sensor' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.sensor' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:21 [2,625ms] [Error] [omni.ext.plugin] [ext: omni.isaac.sensor-5.6.3] Failed to startup python extension.
[2.704s] [ext: omni.isaac.dofbot-0.3.0] startup
2023-06-22 12:30:21 [2,698ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.dofbot. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.dofbot/omni/isaac/dofbot/__init__.py", line 9, in <module>
    from omni.isaac.dofbot.dofbot import DofBot
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.dofbot/omni/isaac/dofbot/dofbot.py", line 11, in <module>
    from omni.isaac.core.robots.robot import Robot
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:21 [2,698ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.dofbot' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.dofbot' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:21 [2,698ms] [Error] [omni.ext.plugin] [ext: omni.isaac.dofbot-0.3.0] Failed to startup python extension.
[2.775s] [ext: omni.isaac.occupancy_map-0.2.7] startup
2023-06-22 12:30:21 [2,773ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.occupancy_map. Error: No module named 'omni.isaac.ui'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.occupancy_map/omni/isaac/occupancy_map/__init__.py", line 10, in <module>
    from .scripts.extension import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.occupancy_map/omni/isaac/occupancy_map/scripts/extension.py", line 19, in <module>
    from omni.isaac.ui.menu import make_menu_item_description
ModuleNotFoundError: No module named 'omni.isaac.ui'

2023-06-22 12:30:21 [2,773ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.occupancy_map' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.occupancy_map' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:21 [2,773ms] [Error] [omni.ext.plugin] [ext: omni.isaac.occupancy_map-0.2.7] Failed to startup python extension.
[2.853s] [ext: omni.isaac.quadruped-1.3.0] startup
2023-06-22 12:30:21 [2,848ms] [Error] [omni.ext._impl._internal] Failed to import python module omni.isaac.quadruped.tests from /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.quadruped. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py", line 165, in _custom_importer
    return import_module_private(ext_module.path, ext_module.name)
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 94, in import_module_private
    spec.loader.exec_module(module)
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.quadruped/omni/isaac/quadruped/tests/__init__.py", line 10, in <module>
    from .test_a1 import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.quadruped/omni/isaac/quadruped/tests/__init__.py", line 10, in <module>
    from .test_a1 import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.quadruped/omni/isaac/quadruped/tests/test_a1.py", line 18, in <module>
    from omni.isaac.core import World
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:21 [2,848ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.quadruped.tests' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.quadruped' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:21 [2,848ms] [Error] [omni.ext.plugin] [ext: omni.isaac.quadruped-1.3.0] Failed to startup python extension.
[2.926s] [ext: omni.isaac.scene_blox-0.1.0] startup
[2.927s] [ext: omni.isaac.synthetic_utils-0.4.3] startup
2023-06-22 12:30:21 [2,921ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.synthetic_utils. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.synthetic_utils/omni/isaac/synthetic_utils/__init__.py", line 12, in <module>
    from .writers import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.synthetic_utils/omni/isaac/synthetic_utils/writers/__init__.py", line 11, in <module>
    from .numpy import NumpyWriter
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.synthetic_utils/omni/isaac/synthetic_utils/writers/numpy.py", line 19, in <module>
    from omni.isaac.core.utils.viewports import get_viewport_names
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:21 [2,922ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.synthetic_utils' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.synthetic_utils' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:21 [2,922ms] [Error] [omni.ext.plugin] [ext: omni.isaac.synthetic_utils-0.4.3] Failed to startup python extension.
[3.002s] [ext: omni.isaac.universal_robots-0.3.2] startup
2023-06-22 12:30:21 [2,997ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.universal_robots. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.universal_robots/omni/isaac/universal_robots/__init__.py", line 9, in <module>
    from omni.isaac.universal_robots.ur10 import UR10
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.universal_robots/omni/isaac/universal_robots/ur10.py", line 11, in <module>
    from omni.isaac.core.robots.robot import Robot
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:21 [2,997ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.universal_robots' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.universal_robots' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:21 [2,997ms] [Error] [omni.ext.plugin] [ext: omni.isaac.universal_robots-0.3.2] Failed to startup python extension.
[3.074s] [ext: omni.isaac.isaac_sensor-2.0.0] startup
2023-06-22 12:30:21 [3,069ms] [Warning] [omni.isaac.isaac_sensor] omni.isaac.isaac_sensor is deprecated and was renamed; use omni.isaac.sensor
[3.075s] [ext: omni.kit.widget.live_session_management-1.1.3] startup
[3.078s] [ext: omni.kit.hotkeys.core-1.0.8] startup
[3.081s] [ext: omni.isaac.wheeled_robots-0.6.3] startup
2023-06-22 12:30:21 [3,076ms] [Error] [omni.graph.core._impl.register_ogn_nodes] Failed to import Python OmniGraph node OgnHolonomicController.py - No module named 'omni.isaac.core'
2023-06-22 12:30:21 [3,077ms] [Error] [omni.graph.core._impl.register_ogn_nodes] Failed to import Python OmniGraph node OgnQuinticPathPlanner.py - No module named 'omni.isaac.core_nodes'
2023-06-22 12:30:21 [3,077ms] [Error] [omni.graph.core._impl.register_ogn_nodes] Failed to import Python OmniGraph node OgnDifferentialController.py - No module named 'omni.isaac.core'
2023-06-22 12:30:21 [3,077ms] [Error] [omni.graph.core._impl.register_ogn_nodes] Failed to import Python OmniGraph node OgnHolonomicRobotUsdSetup.py - No module named 'omni.isaac.core'
2023-06-22 12:30:21 [3,077ms] [Error] [omni.graph.core._impl.register_ogn_nodes] Failed to import Python OmniGraph node OgnStanleyControlPID.py - No module named 'omni.isaac.core_nodes'
2023-06-22 12:30:21 [3,077ms] [Error] [omni.graph.core._impl.register_ogn_nodes] Failed to import Python OmniGraph node OgnCheckGoal2D.py - No module named 'omni.isaac.core_nodes'
[3.083s] [ext: omni.kit.widget.stage_icons-1.0.2] startup
[3.084s] [ext: omni.kit.widget.layers-1.6.11] startup
[3.090s] [ext: omni.kit.selection-0.1.0] startup
[3.091s] [ext: omni.isaac.mjcf-0.3.1] startup
2023-06-22 12:30:21 [3,089ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.mjcf. Error: No module named 'omni.isaac.ui'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.mjcf/omni/isaac/mjcf/__init__.py", line 10, in <module>
    from .scripts.extension import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.mjcf/omni/isaac/mjcf/scripts/extension.py", line 19, in <module>
    from omni.isaac.ui.menu import make_menu_item_description
ModuleNotFoundError: No module named 'omni.isaac.ui'

2023-06-22 12:30:21 [3,090ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.mjcf' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.mjcf' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:21 [3,090ms] [Error] [omni.ext.plugin] [ext: omni.isaac.mjcf-0.3.1] Failed to startup python extension.
[3.170s] [ext: omni.kit.window.stage-2.3.12] startup
[3.174s] [ext: omni.kit.property.layer-1.1.4] startup
[3.175s] [ext: omni.kit.menu.edit-1.1.6] startup
[3.176s] [ext: omni.kit.menu.file-1.1.4] startup
[3.177s] [ext: omni.kit.menu.stage-1.2.1] startup
[3.177s] [ext: omni.kit.property.audio-1.0.6] startup
[3.178s] [ext: omni.kit.property.camera-1.0.3] startup
[3.179s] [ext: omni.kit.property.geometry-1.2.2] startup
[3.180s] [ext: omni.kit.property.light-1.0.6] startup
[3.181s] [ext: omni.hydra.scene_api-0.1.1] startup
[3.186s] [ext: omni.kit.property.material-1.8.19] startup
[3.188s] [ext: omni.kit.property.render-1.1.0] startup
[3.188s] [ext: omni.kit.property.skel-1.0.1] startup
[3.189s] [ext: omni.kit.property.transform-1.3.5] startup
[3.191s] [ext: omni.kit.manipulator.transform-104.6.12] startup
[3.192s] [ext: omni.kit.widget.toolbar-1.4.0] startup
[3.196s] [ext: omni.kit.profiler.window-2.0.5] startup
[3.234s] [ext: omni.kit.property.bundle-1.2.6] startup
[3.234s] [ext: omni.kit.manipulator.selector-1.0.1] startup
[3.235s] [ext: omni.kit.manipulator.tool.snap-1.2.4] startup
[3.239s] [ext: omni.kit.window.toolbar-1.4.0] startup
[3.240s] [ext: omni.kit.property.isaac-0.2.0] startup
[3.241s] [ext: omni.kit.stage_column.payload-1.0.8] startup
[3.242s] [ext: omni.kit.manipulator.camera-104.0.23] startup
[3.242s] [ext: omni.kit.manipulator.prim-104.10.7] startup
[3.245s] [ext: omni.kit.manipulator.selection-104.0.6] startup
[3.246s] [ext: omni.kit.viewport.menubar.display-104.1.11] startup
[3.246s] [ext: omni.kit.viewport.menubar.camera-104.1.9] startup
[3.249s] [ext: omni.rtx.window.settings-0.6.2] startup
[3.253s] [ext: omni.kit.viewport.menubar.settings-104.3.5] startup
[3.256s] [ext: omni.kit.viewport.menubar.render-104.0.20] startup
[3.257s] [ext: omni.physx.commands-104.2.4-5.1] startup
[3.260s] [ext: omni.kit.stage_column.variant-1.0.9] startup
[3.261s] [ext: omni.hydra.pxr.settings-1.0.3] startup
[3.261s] [ext: omni.kit.viewport.bundle-104.0.2] startup
[3.261s] [ext: omni.physx.ui-104.2.4-5.1] startup
[3.304s] [ext: omni.kit.viewport.menubar.lighting-104.0.9] startup
[3.305s] [ext: omni.kit.viewport.pxr-104.0.1] startup
[3.305s] [ext: omni.kit.viewport.ready-1.0.2] startup
[3.306s] [ext: omni.physx.demos-104.2.4-5.1] startup
[3.307s] [ext: omni.kit.property.physx-0.1.0] startup
[3.337s] [ext: omni.isaac.urdf-0.5.9] startup
2023-06-22 12:30:21 [3,334ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.urdf. Error: No module named 'omni.isaac.ui'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.urdf/omni/isaac/urdf/__init__.py", line 10, in <module>
    from .scripts.extension import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.urdf/omni/isaac/urdf/scripts/extension.py", line 19, in <module>
    from omni.isaac.ui.menu import make_menu_item_description
ModuleNotFoundError: No module named 'omni.isaac.ui'

2023-06-22 12:30:21 [3,334ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.urdf' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.urdf' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:21 [3,334ms] [Error] [omni.ext.plugin] [ext: omni.isaac.urdf-0.5.9] Failed to startup python extension.
[3.423s] [ext: omni.kit.widget.highlight_label-1.0.0] startup
[3.426s] [ext: omni.physx.supportui-104.2.4-5.1] startup
[3.435s] [ext: omni.physx.vehicle-104.2.4-5.1] startup
[3.521s] [ext: omni.physx.cct-104.2.4-5.1] startup
[3.526s] [ext: omni.physx.camera-104.2.4-5.1] startup
[3.530s] [ext: omni.kit.actions.window-1.1.0] startup
[3.533s] [ext: omni.kit.window.commands-0.2.4] startup
[3.534s] [ext: omni.kit.window.console-0.2.3] startup
[3.540s] [ext: omni.physx.bundle-104.2.4-5.1] startup
[3.540s] [ext: omni.graph.bundle.action-1.3.0] startup
[3.540s] [ext: omni.kit.window.script_editor-1.7.2] startup
[3.542s] [ext: omni.kit.hotkeys.window-1.1.3] startup
[3.545s] [ext: omni.kit.window.status_bar-0.1.5] startup
[3.547s] [ext: omni.kit.window.title-1.1.2] startup
[3.548s] [ext: omni.replicator.composer-1.2.10] startup
[3.561s] [ext: omni.replicator.isaac-1.7.4] startup
2023-06-22 12:30:21 [3,558ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.replicator.isaac. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.replicator.isaac/omni/replicator/isaac/__init__.py", line 10, in <module>
    from .scripts import physics_view, trigger, gate, utils, context
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.replicator.isaac/omni/replicator/isaac/scripts/__init__.py", line 1, in <module>
    from .writers import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.replicator.isaac/omni/replicator/isaac/scripts/writers/__init__.py", line 9, in <module>
    from .ycb_video_writer import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.replicator.isaac/omni/replicator/isaac/scripts/writers/ycb_video_writer.py", line 19, in <module>
    from omni.isaac.core.utils.mesh import get_mesh_vertices_relative_to
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:21 [3,558ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.replicator.isaac' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.replicator.isaac' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:21 [3,558ms] [Error] [omni.ext.plugin] [ext: omni.replicator.isaac-1.7.4] Failed to startup python extension.
[3.651s] [ext: omni.resourcemonitor-1.0.0] startup
[3.655s] [ext: omni.rtx.settings.core-0.5.8] startup
[3.658s] [ext: omni.isaac.franka-0.4.0] startup
2023-06-22 12:30:22 [3,654ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.franka. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.franka/omni/isaac/franka/__init__.py", line 9, in <module>
    from omni.isaac.franka.franka import Franka
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.franka/omni/isaac/franka/franka.py", line 11, in <module>
    from omni.isaac.core.robots.robot import Robot
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:22 [3,654ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.franka' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.franka' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:22 [3,654ms] [Error] [omni.ext.plugin] [ext: omni.isaac.franka-0.4.0] Failed to startup python extension.
[3.745s] [ext: omni.kit.viewport.rtx-104.0.0] startup
[3.745s] [ext: semantics.schema.editor-0.3.3] startup
[3.747s] [ext: omni.kit.widget.live-2.0.3] startup
[3.750s] [ext: omni.isaac.utils-0.2.4] startup
2023-06-22 12:30:22 [3,746ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module omni.isaac.utils.tests. Error: No module named 'omni.isaac.core'. Traceback:
Traceback (most recent call last):
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.utils/omni/isaac/utils/tests/__init__.py", line 10, in <module>
    from .test_sim_commands import *
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.utils/omni/isaac/utils/tests/test_sim_commands.py", line 20, in <module>
    from omni.isaac.core.utils.nucleus import get_assets_root_path
ModuleNotFoundError: No module named 'omni.isaac.core'

2023-06-22 12:30:22 [3,746ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.utils.tests' in '/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.utils' failed to load.

At:
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(189): startup
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(301): _start_app
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(186): __init__
  /home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py(45): __init__
  /home/bak/anaconda3/envs/isaac-sim_22.2.1/lib/python3.7/site-packages/skrl/utils/omniverse_isaacgym_utils.py(275): get_env_instance
  moving_target_train.py(72): <module>

2023-06-22 12:30:22 [3,746ms] [Error] [omni.ext.plugin] [ext: omni.isaac.utils-0.2.4] Failed to startup python extension.
[3.840s] [ext: omni.isaac.kit-1.4.1] startup
[3.840s] [ext: omni.isaac.cortex-0.3.2] startup
[3.841s] [ext: omni.kit.window.stats-0.1.2] startup
[3.844s] [ext: omni.isaac.sim.python-2022.2.1] startup
[3.844s] Simulation App Starting
[5.887s] app ready
[5.959s] RTX ready
[6.015s] Simulation App Startup Complete
Traceback (most recent call last):
  File "moving_target_train.py", line 75, in <module>
    from moving_target_env import MovingTargetTask, TASK_CFG
  File "/home/bak/.local/share/ov/pkg/isaac_sim-2022.2.1/OmniIsaacGymEnvsAILAB/omniisaacgymenvs/skrl_examples/moving_target_point_cloud/moving_target_env.py", line 6, in <module>
    from omni.isaac.core.utils.extensions import enable_extension
ModuleNotFoundError: No module named 'omni.isaac.core'

I solved it by reinstalling 2022.2.1.

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