Run Python script from console - Module lula not found

Hi,

I’m trying to run one of the standalone example scripts from IsaacSIM.
But when I run from ~/ .local/share/ov/pkg/isaac_sim-2022.1.1

./python.sh standalone_examples/api/omni.isaac.universal_robots/follow_target_with_rmpflow.py

I get the error:

2022-09-22 10:14:33 [4,065ms] [Error] [omni.ext.impl.custom_importer] Failed to import python module omni.isaac.dofbot. Error: No module named 'lula'. Traceback:
Traceback (most recent call last):
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/python/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/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.dofbot/omni/isaac/dofbot/__init__.py", line 10, in <module>
    from omni.isaac.dofbot.kinematics_solver import KinematicsSolver
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.dofbot/omni/isaac/dofbot/kinematics_solver.py", line 9, in <module>
    from omni.isaac.motion_generation import ArticulationKinematicsSolver, interface_config_loader, LulaKinematicsSolver
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/__init__.py", line 14, in <module>
    from omni.isaac.motion_generation.lula.motion_policies import RmpFlow, RmpFlowSmoothed
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/__init__.py", line 1, in <module>
    from .motion_policies import RmpFlow
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/motion_policies.py", line 14, in <module>
    import lula
ModuleNotFoundError: No module named 'lula'

What import do I need to do or am I running the script wrong?

Hi @wagnch02

Mmmmm, can you try the following command (that enables the omni.isaac.lula extension) and show the output?

./python.sh standalone_examples/api/omni.isaac.universal_robots/follow_target_with_rmpflow.py --enable "omni.isaac.lula"

Hi @toni.sm

thanks for your fast reply!
Unfortunately this didn’t work either…
Here you have the complete output:

Starting kit application with the fillowing args:  ['/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py', '/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/apps/omni.isaac.sim.python.kit', '--/app/tokens/exe-path=/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit', '--/persistent/app/viewport/displayOptions=3094', '--/rtx/materialDb/syncLoads=True', '--/rtx/hydra/materialSyncLoads=True--/omni.kit.plugin/syncUsdLoads=True', '--/app/renderer/resolution/width=1280', '--/app/renderer/resolution/height=720', '--/app/window/width=1440', '--/app/window/height=900', '--/renderer/multiGpu/enabled=True', '--ext-folder', '/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts', '--ext-folder', '/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/apps', '--/physics/cudaDevice=0', '--portable']
Passing the following args to the base kit application:  ['--enable', 'omni.isaac.lula']
[Warning] [omni.kit.app.plugin] No crash reporter present, dumps uploading isn't available.
[Info] [carb] Logging to file: /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/logs/Kit/Isaac-Sim/2022.1/kit_20220922_145549.log
2022-09-22 12:55:49 [2ms] [Warning] [omni.ext.plugin] [ext: omni.drivesim.sensors.nv.lidar] Extensions config 'extension.toml' doesn't exist '/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.drivesim.sensors.nv.lidar' or '/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.drivesim.sensors.nv.lidar/config'
[0.050s] [ext: omni.stats-0.0.0] startup
[0.078s] [ext: omni.gpu_foundation-0.0.0] startup
2022-09-22 12:55:49 [77ms] [Warning] [carb] FrameworkImpl::setDefaultPlugin(client: omni.gpu_foundation_factory.plugin, desc : [carb::graphics::Graphics v2.5], plugin : carb.graphics-vulkan.plugin) failed. Plugin selection is locked, because the interface was previously acquired by: 
[0.085s] [ext: carb.windowing.plugins-1.0.0] startup
[0.093s] [ext: omni.assets.plugins-0.0.0] startup
[0.094s] [ext: omni.kit.renderer.init-0.0.0] startup

|---------------------------------------------------------------------------------------------|
| Driver Version: 515.65.1      | Graphics API: Vulkan
|=============================================================================================|
| GPU | Name                             | Active | LDA | GPU Memory | Vendor-ID | LUID       |
|     |                                  |        |     |            | Device-ID | UUID       |
|---------------------------------------------------------------------------------------------|
| 0   | NVIDIA GeForce RTX 3090          | Yes: 0 |     | 24822   MB | 10de      | 0          |
|     |                                  |        |     |            | 2204      | 525e91fa.. |
|=============================================================================================|
| OS: Linux i-srrc-ws-32, Version: 5.15.0-46-generic
| XServer Vendor: The X.Org Foundation, XServer Version: 12013000 (1.20.13.0)
| Processor: AMD Ryzen 9 5950X 16-Core Processor             | Cores: Unknown | Logical: 32
|---------------------------------------------------------------------------------------------|
| Total Memory (MB): 64227 | Free Memory: 41656
| Total Page/Swap (MB): 2047 | Free Page/Swap: 2047
|---------------------------------------------------------------------------------------------|
2022-09-22 12:55:49 [802ms] [Warning] [carb.cudainterop.plugin] On Linux only, CUDA and the display driver does not support IOMMU-enabled bare-metal PCIe peer to peer memory copy.
However, CUDA and the display driver does support IOMMU via VM pass through. As a consequence, users on Linux,
when running on a native bare metal system, should disable the IOMMU. The IOMMU should be enabled and the VFIO driver
be used as a PCIe pass through for virtual machines.
[0.814s] [ext: omni.kit.pipapi-0.0.0] startup
[0.827s] [ext: omni.kit.pip_archive-0.0.0] startup
[0.839s] [ext: omni.isaac.core_archive-1.2.0] startup
[0.994s] [ext: omni.usd.config-1.0.0] startup
[0.995s] [ext: omni.usd.libs-1.0.0] startup
[1.109s] [ext: omni.kit.pip_torch-1_11_0-0.1.3] startup
[1.150s] [ext: omni.isaac.ml_archive-1.1.0] startup
[1.207s] [ext: omni.kit.loop-isaac-0.1.0] startup
[1.207s] [ext: omni.kit.async_engine-0.0.0] startup
[1.209s] [ext: omni.appwindow-1.0.0] startup
[1.213s] [ext: omni.client-0.1.0] startup
[1.221s] [ext: omni.kit.test-0.0.0] startup
[1.222s] [ext: omni.kit.renderer.core-0.0.0] startup
[1.499s] [ext: omni.ui-2.10.3] startup
[1.512s] [ext: carb.audio-0.1.0] startup
[1.533s] [ext: omni.kit.mainwindow-0.0.0] startup
[1.536s] [ext: omni.uiaudio-1.0.0] startup
[1.537s] [ext: omni.kit.uiapp-0.0.0] startup
[1.537s] [ext: omni.usd.schema.physics-1.0.0] startup
[1.575s] [ext: omni.usd.schema.audio-0.0.0] startup
[1.584s] [ext: omni.usd.schema.semantics-0.0.0] startup
[1.592s] [ext: omni.usd.schema.omnigraph-1.0.0] startup
[1.598s] [ext: omni.usd.schema.anim-0.0.0] startup
[1.629s] [ext: omni.kit.commands-1.2.2] startup
[1.633s] [ext: omni.timeline-1.0.2] startup
[1.635s] [ext: omni.hydra.scene_delegate-0.2.0] startup
[1.639s] [ext: omni.kit.audiodeviceenum-1.0.0] startup
[1.640s] [ext: omni.usd-1.5.3] startup
[1.674s] [ext: omni.kit.asset_converter-1.2.31] startup
[1.685s] [ext: omni.usd.schema.physx-0.0.0] startup
[1.706s] [ext: omni.usd.schema.isaac-0.2.0] startup
[1.737s] [ext: omni.usd.schema.forcefield-0.0.0] startup
[1.743s] [ext: omni.kvdb-0.0.0] startup
[1.746s] [ext: omni.usdphysics-1.4.15] startup
[1.748s] [ext: omni.graph.tools-1.4.0] startup
[1.765s] [ext: omni.localcache-0.0.0] startup
[1.767s] [ext: omni.kit.stage_templates-1.1.2] startup
[1.769s] [ext: omni.convexdecomposition-1.4.15] startup
[1.771s] [ext: omni.physics.tensors-0.1.0] startup
[1.776s] [ext: omni.physx-1.4.15-5.1] startup
2022-09-22 12:55:50 [1,780ms] [Warning] [omni.kvdb.plugin] wasn't able to load the meta database, trying to repair it ...
2022-09-22 12:55:50 [1,814ms] [Warning] [omni.kvdb.plugin] repair failed
[1.820s] [ext: omni.graph.core-2.29.1] startup
[1.823s] [ext: omni.kit.menu.utils-1.2.11] startup
[1.831s] [ext: omni.physx.tensors-0.1.0] startup
[1.836s] [ext: omni.graph-1.23.0] startup
[1.895s] [ext: omni.kit.numpy.common-0.1.0] startup
[1.897s] [ext: omni.kit.window.script_editor-1.6.2] startup
[1.904s] [ext: omni.kit.search_core-1.0.2] startup
[1.905s] [ext: omni.isaac.dynamic_control-1.1.0] startup
[1.911s] [ext: omni.kit.renderer.capture-0.0.0] startup
[1.913s] [ext: omni.kit.widget.filebrowser-2.2.27] startup
[1.919s] [ext: omni.kit.widget.path_field-2.0.3] startup
[1.920s] [ext: omni.kit.notification_manager-1.0.5] startup
[1.925s] [ext: omni.kit.widget.versioning-1.3.8] startup
[1.927s] [ext: omni.kit.widget.browser_bar-2.0.3] startup
[1.928s] [ext: omni.kit.window.popup_dialog-2.0.8] startup
[1.930s] [ext: omni.mdl.neuraylib-0.1.0] startup
[1.932s] [ext: omni.kit.window.filepicker-2.4.30] startup
OmniAssetFileFormat
[1.967s] [ext: omni.kit.menu.create-1.0.2] startup
[1.968s] [ext: omni.mdl-0.1.0] startup
[1.982s] [ext: omni.kit.window.file_importer-1.0.4] startup
[1.983s] [ext: omni.kit.window.file_exporter-1.0.4] startup
[1.984s] [ext: omni.kit.material.library-1.3.10] startup
[1.986s] [ext: omni.kit.window.drop_support-1.0.0] startup
[1.986s] [ext: omni.kit.window.file-1.3.16] startup
[1.988s] [ext: omni.kit.context_menu-1.3.9] startup
[1.991s] [ext: omni.kit.window.property-1.6.3] startup
[1.992s] [ext: omni.kit.window.content_browser-2.4.28] startup
[2.006s] [ext: omni.kit.widget.stage-2.6.15] startup
[2.009s] [ext: omni.isaac.version-1.0.0] startup
[2.010s] [ext: omni.kit.property.usd-3.14.9] startup
[2.035s] [ext: omni.kit.viewport.legacy_gizmos-1.0.0] startup
[2.037s] [ext: omni.hydra.rtx-0.1.0] startup
[2.043s] [ext: omni.renderer-rtx-0.0.0] startup
[2.043s] [ext: omni.hydra.engine.stats-1.0.0] startup
[2.047s] [ext: omni.debugdraw-0.1.0] startup
[2.051s] [ext: omni.kit.widget.settings-1.0.0] startup
[2.052s] [ext: omni.kit.window.viewport-0.0.0] startup
[2.649s] [ext: omni.kit.widget.prompt-1.0.1] startup
[2.650s] [ext: omni.kit.widget.graph-1.4.3] startup
[2.656s] [ext: omni.kit.window.preferences-1.2.1] startup
[2.684s] [ext: omni.ui_query-1.1.1] startup
[2.686s] [ext: omni.graph.ui-1.6.1] startup
[2.745s] [ext: omni.kit.ui_test-1.2.2] startup
[2.746s] [ext: omni.graph.action-1.18.0] startup
[2.755s] [ext: omni.kit.widget.searchfield-1.0.6] startup
[2.756s] [ext: omni.kit.usd_undo-0.1.0] startup
[2.757s] [ext: omni.graph.scriptnode-0.5.0] startup
[2.759s] [ext: omni.physx.commands-1.4.15-5.1] startup
[2.763s] [ext: omni.graph.nodes-1.26.0] startup
[2.773s] [ext: omni.command.usd-1.0.1] startup
[2.776s] [ext: omni.kit.window.extensions-1.1.0] startup
[2.779s] [ext: omni.syntheticdata-0.2.1] startup
[2.804s] [ext: omni.kit.primitive.mesh-1.0.0] startup
[2.808s] [ext: omni.warp-0.2.2] startup
Warp initialized:
   Version: 0.2.2
   CUDA device: NVIDIA GeForce RTX 3090
   Kernel cache: /home/isy/.cache/warp/0.2.2
[3.322s] [ext: omni.isaac.ui-0.2.1] startup
[3.324s] [ext: omni.replicator.core-1.4.3] startup
[3.428s] [ext: omni.isaac.core-1.24.3] startup
[3.499s] [ext: omni.physx.ui-1.4.15-5.1] startup
[3.545s] [ext: omni.kit.property.material-1.8.5] startup
[3.547s] [ext: omni.kit.window.toolbar-1.2.4] startup
[3.552s] [ext: omni.isaac.core_nodes-0.13.0] startup
[3.639s] [ext: omni.physx.demos-1.4.15-5.1] startup
[3.641s] [ext: omni.kit.property.physx-0.1.0] startup
2022-09-22 12:55:52 [3,686ms] [Warning] [omni.physx.plugin] Deprecated: getSimulationEventStream is deprecated, please use getSimulationEventStreamV2
[3.694s] [ext: omni.physx.tests-1.4.15-5.1] startup
[3.828s] [ext: omni.isaac.wheeled_robots-0.5.8] startup
[3.837s] [ext: omni.kit.menu.common-1.0.0] startup
[3.839s] [ext: omni.physx.vehicle-1.4.15-5.1] startup
[3.847s] [ext: omni.physx.cct-1.4.15-5.1] startup
[3.893s] [ext: omni.physx.camera-1.4.15-5.1] startup
[3.899s] [ext: omni.kit.widget.stage_icons-1.0.2] startup
[3.900s] [ext: omni.ui.scene-1.5.0] startup
[3.905s] [ext: omni.physx.bundle-1.4.15-5.1] startup
[3.905s] [ext: omni.kit.window.stage-2.3.7] startup
[3.908s] [ext: omni.replicator.composer-1.1.3] startup
[3.920s] [ext: omni.isaac.lula-1.1.0] startup
2022-09-22 12:55:52 [3,921ms] [Error] [omni.ext.impl.custom_importer] Failed to import python module lula. Error: /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_planning/bin/liblula_util.so: undefined symbol: _ZN4YAML8LoadFileERKSs. Traceback:
Traceback (most recent call last):
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/python/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 670, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 583, in module_from_spec
  File "<frozen importlib._bootstrap_external>", line 1043, in create_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
ImportError: /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_planning/bin/liblula_util.so: undefined symbol: _ZN4YAML8LoadFileERKSs

2022-09-22 12:55:52 [3,921ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'lula' in '/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.lula/pip_prebundle' failed to load.

At:
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/_internal.py(177): startup
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/_internal.py(268): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(293): _start_app
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(167): __init__
  standalone_examples/api/omni.isaac.universal_robots/follow_target_with_rmpflow.py(11): <module>

2022-09-22 12:55:52 [3,921ms] [Error] [omni.ext.plugin] [ext: omni.isaac.lula-1.1.0] Failed to startup python extension.
[3.948s] [ext: omni.rtx.window.settings-0.6.1] startup
[3.953s] [ext: omni.isaac.surface_gripper-0.1.2] startup
[3.957s] [ext: omni.isaac.motion_planning-0.2.0] startup
[3.964s] [ext: omni.rtx.settings.core-0.5.5] startup
[3.968s] [ext: omni.isaac.manipulators-1.0.1] startup
[3.969s] [ext: omni.isaac.motion_generation-3.6.1] startup
2022-09-22 12:55:52 [3,969ms] [Error] [omni.ext.impl.custom_importer] Failed to import python module omni.isaac.motion_generation. Error: No module named 'lula'. Traceback:
Traceback (most recent call last):
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/python/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/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/__init__.py", line 14, in <module>
    from omni.isaac.motion_generation.lula.motion_policies import RmpFlow, RmpFlowSmoothed
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/__init__.py", line 1, in <module>
    from .motion_policies import RmpFlow
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/motion_policies.py", line 14, in <module>
    import lula
ModuleNotFoundError: No module named 'lula'

2022-09-22 12:55:52 [3,969ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.motion_generation' in '/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation' failed to load.

At:
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/_internal.py(177): startup
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/_internal.py(268): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(293): _start_app
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(167): __init__
  standalone_examples/api/omni.isaac.universal_robots/follow_target_with_rmpflow.py(11): <module>

2022-09-22 12:55:52 [3,969ms] [Error] [omni.ext.plugin] [ext: omni.isaac.motion_generation-3.6.1] Failed to startup python extension.
[3.979s] [ext: omni.kit.widget.zoombar-1.0.3] startup
[3.980s] [ext: omni.kit.graph.delegate.default-1.0.15] startup
[3.982s] [ext: omni.isaac.franka-0.3.0] startup
2022-09-22 12:55:53 [3,979ms] [Error] [omni.ext.impl.custom_importer] Failed to import python module omni.isaac.franka. Error: No module named 'lula'. Traceback:
Traceback (most recent call last):
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/python/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/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.franka/omni/isaac/franka/__init__.py", line 10, in <module>
    from omni.isaac.franka.kinematics_solver import KinematicsSolver
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.franka/omni/isaac/franka/kinematics_solver.py", line 9, in <module>
    from omni.isaac.motion_generation import ArticulationKinematicsSolver, interface_config_loader, LulaKinematicsSolver
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/__init__.py", line 14, in <module>
    from omni.isaac.motion_generation.lula.motion_policies import RmpFlow, RmpFlowSmoothed
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/__init__.py", line 1, in <module>
    from .motion_policies import RmpFlow
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/motion_policies.py", line 14, in <module>
    import lula
ModuleNotFoundError: No module named 'lula'

2022-09-22 12:55:53 [3,979ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.franka' in '/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.franka' failed to load.

At:
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/_internal.py(177): startup
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/_internal.py(268): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(293): _start_app
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(167): __init__
  standalone_examples/api/omni.isaac.universal_robots/follow_target_with_rmpflow.py(11): <module>

2022-09-22 12:55:53 [3,979ms] [Error] [omni.ext.plugin] [ext: omni.isaac.franka-0.3.0] Failed to startup python extension.
[3.987s] [ext: omni.kit.browser.core-2.0.12] startup
[3.990s] [ext: omni.kit.graph.editor.core-1.3.3] startup
[3.992s] [ext: omni.kit.graph.usd.commands-1.1.0] startup
[3.993s] [ext: omni.kit.browser.folder.core-1.1.13] startup
[3.995s] [ext: omni.kit.graph.widget.variables-2.0.2] startup
[3.996s] [ext: omni.kit.graph.delegate.modern-1.6.0] startup
[3.998s] [ext: omni.kit.selection-0.1.0] startup
[3.998s] [ext: omni.isaac.debug_draw-0.1.2] startup
[4.003s] [ext: omni.graph.window.core-1.23.4] startup
[4.007s] [ext: omni.graph.instancing-1.1.4] startup
[4.011s] [ext: omni.kit.menu.edit-1.0.6] startup
[4.013s] [ext: omni.isaac.isaac_sensor-1.0.2] startup
2022-09-22 12:55:53 [4,012ms] [Warning] [omni.physx.plugin] Deprecated: getSimulationEventStream is deprecated, please use getSimulationEventStreamV2
[4.021s] [ext: omni.graph.tutorials-1.1.2] startup
[4.031s] [ext: omni.graph.window.action-1.3.8] startup
[4.033s] [ext: omni.kit.widget.live-0.1.0] startup
[4.036s] [ext: omni.kit.widget.layers-1.5.17] startup
[4.046s] [ext: omni.graph.bundle.action-1.0.0] startup
[4.046s] [ext: omni.isaac.range_sensor-0.4.3] startup
[4.066s] [ext: omni.kit.property.layer-1.1.2] startup
[4.067s] [ext: omni.replicator.isaac-1.3.2] startup
[4.152s] [ext: omni.isaac.kit-0.2.1] startup
[4.153s] [ext: omni.graph.window.generic-1.3.8] startup
[4.154s] [ext: omni.isaac.utils-0.1.11] startup
[4.157s] [ext: omni.kit.property.audio-1.0.5] startup
[4.158s] [ext: omni.kit.property.skel-1.0.1] startup
[4.159s] [ext: omni.kit.property.render-1.1.0] startup
[4.160s] [ext: omni.kit.property.camera-1.0.3] startup
[4.161s] [ext: omni.kit.property.geometry-1.2.0] startup
[4.162s] [ext: omni.kit.property.light-1.0.5] startup
[4.163s] [ext: omni.kit.property.transform-1.0.2] startup
[4.165s] [ext: omni.isaac.universal_robots-0.3.0] startup
2022-09-22 12:55:53 [4,163ms] [Error] [omni.ext.impl.custom_importer] Failed to import python module omni.isaac.universal_robots. Error: No module named 'lula'. Traceback:
Traceback (most recent call last):
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/python/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/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.universal_robots/omni/isaac/universal_robots/__init__.py", line 10, in <module>
    from omni.isaac.universal_robots.kinematics_solver import KinematicsSolver
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.universal_robots/omni/isaac/universal_robots/kinematics_solver.py", line 9, in <module>
    from omni.isaac.motion_generation import ArticulationKinematicsSolver, interface_config_loader, LulaKinematicsSolver
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/__init__.py", line 14, in <module>
    from omni.isaac.motion_generation.lula.motion_policies import RmpFlow, RmpFlowSmoothed
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/__init__.py", line 1, in <module>
    from .motion_policies import RmpFlow
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/motion_policies.py", line 14, in <module>
    import lula
ModuleNotFoundError: No module named 'lula'

2022-09-22 12:55:53 [4,163ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.universal_robots' in '/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.universal_robots' failed to load.

At:
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/_internal.py(177): startup
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/_internal.py(268): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(293): _start_app
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(167): __init__
  standalone_examples/api/omni.isaac.universal_robots/follow_target_with_rmpflow.py(11): <module>

2022-09-22 12:55:53 [4,163ms] [Error] [omni.ext.plugin] [ext: omni.isaac.universal_robots-0.3.0] Failed to startup python extension.
[4.171s] [ext: omni.isaac.occupancy_map-0.2.4] startup
[4.181s] [ext: omni.kit.window.console-0.2.0] startup
[4.185s] [ext: omni.kit.window.status_bar-0.1.1] startup
[4.188s] [ext: omni.kit.property.bundle-1.2.4] startup
[4.189s] [ext: omni.kit.menu.file-1.0.8] startup
[4.190s] [ext: omni.kit.manipulator.viewport-1.0.6] startup
[4.193s] [ext: omni.isaac.urdf-0.4.0] startup
[4.214s] [ext: omni.isaac.dofbot-0.3.0] startup
2022-09-22 12:55:53 [4,212ms] [Error] [omni.ext.impl.custom_importer] Failed to import python module omni.isaac.dofbot. Error: No module named 'lula'. Traceback:
Traceback (most recent call last):
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/custom_importer.py", line 76, in import_module
    return importlib.import_module(name)
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/python/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/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.dofbot/omni/isaac/dofbot/__init__.py", line 10, in <module>
    from omni.isaac.dofbot.kinematics_solver import KinematicsSolver
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.dofbot/omni/isaac/dofbot/kinematics_solver.py", line 9, in <module>
    from omni.isaac.motion_generation import ArticulationKinematicsSolver, interface_config_loader, LulaKinematicsSolver
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/__init__.py", line 14, in <module>
    from omni.isaac.motion_generation.lula.motion_policies import RmpFlow, RmpFlowSmoothed
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/__init__.py", line 1, in <module>
    from .motion_policies import RmpFlow
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/motion_policies.py", line 14, in <module>
    import lula
ModuleNotFoundError: No module named 'lula'

2022-09-22 12:55:53 [4,212ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'omni.isaac.dofbot' in '/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.dofbot' failed to load.

At:
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/_internal.py(177): startup
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/kit/plugins/bindings-python/omni/ext/impl/_internal.py(268): startup_extension
  PythonExtension.cpp::startup()(2): <module>
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(293): _start_app
  /home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.kit/omni/isaac/kit/simulation_app.py(167): __init__
  standalone_examples/api/omni.isaac.universal_robots/follow_target_with_rmpflow.py(11): <module>

2022-09-22 12:55:53 [4,212ms] [Error] [omni.ext.plugin] [ext: omni.isaac.dofbot-0.3.0] Failed to startup python extension.
[4.220s] [ext: omni.kit.window.title-1.1.2] startup
[4.221s] [ext: omni.kit.profiler.window-1.4.4] startup
[4.225s] [ext: omni.graph.visualization.nodes-1.1.1] startup
[4.228s] [ext: omni.isaac.synthetic_utils-0.3.5] startup
[4.230s] [ext: semantics.schema.editor-0.2.3] startup
[4.233s] [ext: omni.isaac.sim.python-2022.1.1] startup
[4.233s] Simulation App Starting
[4.926s] app ready
[6.831s] Simulation App Startup Complete
Traceback (most recent call last):
  File "standalone_examples/api/omni.isaac.universal_robots/follow_target_with_rmpflow.py", line 13, in <module>
    from omni.isaac.universal_robots.tasks import FollowTarget
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.universal_robots/omni/isaac/universal_robots/__init__.py", line 10, in <module>
    from omni.isaac.universal_robots.kinematics_solver import KinematicsSolver
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.universal_robots/omni/isaac/universal_robots/kinematics_solver.py", line 9, in <module>
    from omni.isaac.motion_generation import ArticulationKinematicsSolver, interface_config_loader, LulaKinematicsSolver
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/__init__.py", line 14, in <module>
    from omni.isaac.motion_generation.lula.motion_policies import RmpFlow, RmpFlowSmoothed
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/__init__.py", line 1, in <module>
    from .motion_policies import RmpFlow
  File "/home/isy/.local/share/ov/pkg/isaac_sim-2022.1.1/exts/omni.isaac.motion_generation/omni/isaac/motion_generation/lula/motion_policies.py", line 14, in <module>
    import lula
ModuleNotFoundError: No module named 'lula'
./python.sh: line 40: 138585 Segmentation fault      (core dumped) $python_exe "$@" $args
There was an error running python

Hi @wagnch02

Make sure you don’t have ROS2 sourced in the current terminal or .bashrc

In any case, you can clean the LD_LIBRARY_PATH as follow, then run the script again

unset LD_LIBRARY_PATH
./python.sh standalone_examples/api/omni.isaac.universal_robots/follow_target_with_rmpflow.py

For reference: (5. ROS & ROS 2 Installation — Omniverse Robotics documentation)

Do not source ROS2 in the terminal running Isaac Sim, standalone python scripts or Isaac Cortex as that can cause errors during startup because of conflicting symbols.

That was exactly the problem. It works now.
Thank you very much!