Error running Carpole example in Omniverse Isaac Gym

Autonomous Machines Robotics - Isaac Isaac Gym
1

I followed the installation process for Omni Isaac Gym GitHub - NVIDIA-Omniverse/OmniIsaacGymEnvs: Reinforcement Learning Environments for Omniverse Isaac Gym for docker with the last image.

However, when I run /isaac-sim/python.sh scripts/rlgames_train.py headless=True task=Cartpole or task=Ant, I get the following error:

2024-01-15 23:23:28 [137,345ms] [Warning] [omni.usd] Warning: in _ReportErrors at line 2890 of /buildAgent/work/ac88d7d902b57417/USD/pxr/usd/usd/stage.cpp -- In </World/envs/env_0/Cartpole>: Could not open asset @http://omniverse-content-produ
ction.s3-us-west-2.amazonaws.com/Assets/Isaac/2023.1.1/Isaac/Robots/Cartpole/cartpole.usd@ for reference introduced by @anon:0x119afa00:World0.usd@</World/envs/env_0/Cartpole>. (recomposing stage on stage @anon:0x119afa00:World0.usd@ <0x119b80
80>)

2024-01-15 23:23:29 [138,386ms] [Warning] [omni.usd] Warning: in _ReportErrors at line 2890 of /buildAgent/work/ac88d7d902b57417/USD/pxr/usd/usd/stage.cpp -- In </World/defaultGroundPlane>: Could not open asset @http://omniverse-content-produc
tion.s3-us-west-2.amazonaws.com/Assets/Isaac/2023.1.1/Isaac/Environments/Grid/default_environment.usd@ for reference introduced by @anon:0x119afa00:World0.usd@</World/defaultGroundPlane>. (recomposing stage on stage @anon:0x119afa00:World0.usd
@ <0x119b8080>)

2024-01-15 23:23:29 [138,387ms] [Error] [omni.kit.app._impl] [py stderr]: Error executing job with overrides: ['task=Cartpole', 'headless=True']

Error executing job with overrides: ['task=Cartpole', 'headless=True']
2024-01-15 23:23:29 [138,494ms] [Error] [omni.kit.app._impl] [py stderr]: Traceback (most recent call last):

Traceback (most recent call last):
2024-01-15 23:23:29 [138,494ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,494ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/workspace/omniisaacgymenvs/omniisaacgymenvs/scripts/rlgames_train.py", line 145, in parse_hydra_configs
    task = initialize_task(cfg_dict, env)

  File "/workspace/omniisaacgymenvs/omniisaacgymenvs/scripts/rlgames_train.py", line 145, in parse_hydra_configs
    task = initialize_task(cfg_dict, env)
2024-01-15 23:23:29 [138,494ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,494ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/workspace/omniisaacgymenvs/omniisaacgymenvs/utils/task_util.py", line 103, in initialize_task
    env.set_task(

  File "/workspace/omniisaacgymenvs/omniisaacgymenvs/utils/task_util.py", line 103, in initialize_task
    env.set_task(
2024-01-15 23:23:29 [138,494ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,494ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/workspace/omniisaacgymenvs/omniisaacgymenvs/envs/vec_env_rlgames.py", line 47, in set_task
    super().set_task(task, backend, sim_params, init_sim, rendering_dt)

  File "/workspace/omniisaacgymenvs/omniisaacgymenvs/envs/vec_env_rlgames.py", line 47, in set_task
    super().set_task(task, backend, sim_params, init_sim, rendering_dt)
2024-01-15 23:23:29 [138,494ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,494ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/isaac-sim/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py", line 129, in set_task
    self._world.reset()

  File "/isaac-sim/exts/omni.isaac.gym/omni/isaac/gym/vec_env/vec_env_base.py", line 129, in set_task
    self._world.reset()
2024-01-15 23:23:29 [138,494ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/isaac-sim/exts/omni.isaac.core/omni/isaac/core/world/world.py", line 401, in reset
    task.set_up_scene(self.scene)

  File "/isaac-sim/exts/omni.isaac.core/omni/isaac/core/world/world.py", line 401, in reset
    task.set_up_scene(self.scene)
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/workspace/omniisaacgymenvs/omniisaacgymenvs/tasks/cartpole.py", line 66, in set_up_scene
    super().set_up_scene(scene)

  File "/workspace/omniisaacgymenvs/omniisaacgymenvs/tasks/cartpole.py", line 66, in set_up_scene
    super().set_up_scene(scene)
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/workspace/omniisaacgymenvs/omniisaacgymenvs/tasks/base/rl_task.py", line 181, in set_up_scene
    scene.add_default_ground_plane(prim_path=self._ground_plane_path)

  File "/workspace/omniisaacgymenvs/omniisaacgymenvs/tasks/base/rl_task.py", line 181, in set_up_scene
    scene.add_default_ground_plane(prim_path=self._ground_plane_path)
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/isaac-sim/exts/omni.isaac.core/omni/isaac/core/scenes/scene.py", line 239, in add_default_ground_plane
    plane = GroundPlane(prim_path=prim_path, name=name, z_position=z_position, physics_material=physics_material)

  File "/isaac-sim/exts/omni.isaac.core/omni/isaac/core/scenes/scene.py", line 239, in add_default_ground_plane
    plane = GroundPlane(prim_path=prim_path, name=name, z_position=z_position, physics_material=physics_material)
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/isaac-sim/exts/omni.isaac.core/omni/isaac/core/objects/ground_plane.py", line 111, in __init__
    collision_prim_path = get_prim_path(

  File "/isaac-sim/exts/omni.isaac.core/omni/isaac/core/objects/ground_plane.py", line 111, in __init__
    collision_prim_path = get_prim_path(
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:   File "/isaac-sim/exts/omni.isaac.core/omni/isaac/core/utils/prims.py", line 628, in get_prim_path
    return prim.GetPath()

  File "/isaac-sim/exts/omni.isaac.core/omni/isaac/core/utils/prims.py", line 628, in get_prim_path
    return prim.GetPath()
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]: AttributeError: 'NoneType' object has no attribute 'GetPath'

AttributeError: 'NoneType' object has no attribute 'GetPath'
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:
2024-01-15 23:23:29 [138,495ms] [Error] [omni.kit.app._impl] [py stderr]:
Set the environment variable HYDRA_FULL_ERROR=1 for a complete stack trace.


Set the environment variable HYDRA_FULL_ERROR=1 for a complete stack trace.
2024-01-15 23:23:29 [138,699ms] [Warning] [omni.stageupdate.plugin] Deprecated: direct use of IStageUpdate callbacks is deprecated. Use IStageUpdate::getStageUpdate instead.
2024-01-15 23:23:29 [138,699ms] [Warning] [carb.audio.context] 1 contexts were leaked
2024-01-15 23:23:29 [138,753ms] [Warning] [carb] Recursive unloadAllPlugins() detected!
2024-01-15 23:23:29 [138,756ms] [Warning] [omni.core.ITypeFactory] Module /isaac-sim/kit/exts/omni.activity.core/bin/libomni.activity.core.plugin.so remained loaded after unload request.
There was an error running python

Thanks,

Maxence

2

Hi @m.faldor22

For some reason it seems that you can’t access the assets from your setup

Make sure your connection to internet is working
You can try the connection by manually downloading the asset as follow:

wget http://omniverse-content-production.s3-us-west-2.amazonaws.com/Assets/Isaac/2023.1.1/Isaac/Robots/Cartpole/cartpole.usd
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