[Bug Report] [Warning] [omni.client.python] Detected a blocking function. This will cause hitches or hangs in the UI. Please switch to the async version:

[zhanglixuan0720]

Describe the bug

I run the demo script from source/standalone/demos/quadrupeds.py in VSCode integrated Terminal (command line & debugger), and get the warnings "[omni.client.python] Detected a blocking function. This will cause hitches or hangs in the UI. Please switch to the async version:"

The python program is blocked and does not run as expected.

This problem does not appears when I run this script in system Terminal.

Steps to reproduce

1. Open the VSCode at the IsaacLab root directory: cd /path/to/IsaacLab && code .
2. Activate Conda virtual environment and setup the conda_python: conda activate isaaclab && source /home/sim/.local/share/ov/pkg/isaac-sim-4.0.0/setup_conda_env.sh
3. run the demo python script: python source/standalone/demos/quadrupeds.py

2024-07-19 09:02:26 [47,650ms] [Warning] [carb] Client omni.stageupdate.plugin has acquired [omni::hydra::IOmniHydra v2.0] 100 times. Consider accessing this interface with carb::getCachedInterface() (Performance warning)
2024-07-19 09:02:40 [61,599ms] [Warning] [omni.client.python] Detected a blocking function. This will cause hitches or hangs in the UI. Please switch to the async version:
  File "/home/sim/anaconda3/envs/isaaclab/lib/python3.10/runpy.py", line 196, in _run_module_as_main
  File "/home/sim/anaconda3/envs/isaaclab/lib/python3.10/runpy.py", line 86, in _run_code
  File "/home/sim/.vscode/extensions/ms-python.debugpy-2024.8.0-linux-x64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/__main__.py", line 39, in <module>
  File "/home/sim/.vscode/extensions/ms-python.debugpy-2024.8.0-linux-x64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/../debugpy/server/cli.py", line 430, in main
  File "/home/sim/.vscode/extensions/ms-python.debugpy-2024.8.0-linux-x64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/../debugpy/server/cli.py", line 284, in run_file
  File "/home/sim/.vscode/extensions/ms-python.debugpy-2024.8.0-linux-x64/bundled/libs/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 321, in run_path
  File "/home/sim/.vscode/extensions/ms-python.debugpy-2024.8.0-linux-x64/bundled/libs/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 135, in _run_module_code
  File "/home/sim/.vscode/extensions/ms-python.debugpy-2024.8.0-linux-x64/bundled/libs/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 124, in _run_code
  File "/home/sim/nav/IsaacLab/source/standalone/demos/quadrupeds.py", line 190, in <module>
  File "/home/sim/nav/IsaacLab/source/standalone/demos/quadrupeds.py", line 181, in main
  File "/home/sim/nav/IsaacLab/source/extensions/omni.isaac.lab/omni/isaac/lab/sim/simulation_context.py", line 389, in reset
  File "/home/sim/.local/share/ov/pkg/isaac-sim-4.0.0/exts/omni.isaac.core/omni/isaac/core/simulation_context/simulation_context.py", line 622, in reset
  File "/home/sim/.local/share/ov/pkg/isaac-sim-4.0.0/exts/omni.isaac.core/omni/isaac/core/simulation_context/simulation_context.py", line 590, in initialize_physics
  File "/home/sim/.local/share/ov/pkg/isaac-sim-4.0.0/exts/omni.isaac.core/omni/isaac/core/simulation_context/simulation_context.py", line 887, in play
  File "/home/sim/nav/IsaacLab/source/extensions/omni.isaac.lab/omni/isaac/lab/sim/simulation_context.py", line 460, in render
  File "/home/sim/nav/IsaacLab/source/extensions/omni.isaac.lab/omni/isaac/lab/assets/asset_base.py", line 92, in <lambda>
  File "/home/sim/nav/IsaacLab/source/extensions/omni.isaac.lab/omni/isaac/lab/assets/asset_base.py", line 263, in _initialize_callback
  File "/home/sim/nav/IsaacLab/source/extensions/omni.isaac.lab/omni/isaac/lab/assets/articulation/articulation.py", line 805, in _initialize_impl
  File "/home/sim/nav/IsaacLab/source/extensions/omni.isaac.lab/omni/isaac/lab/assets/articulation/articulation.py", line 960, in _process_actuators_cfg
  File "/home/sim/nav/IsaacLab/source/extensions/omni.isaac.lab/omni/isaac/lab/actuators/actuator_net.py", line 50, in __init__
  File "/home/sim/nav/IsaacLab/source/extensions/omni.isaac.lab/omni/isaac/lab/utils/assets.py", line 125, in read_file
  File "/home/sim/.local/share/ov/pkg/isaac-sim-4.0.0/kit/extscore/omni.client/omni/client/__init__.py", line 610, in read_file

System Info

Describe the characteristic of your environment:

• Commit: main
• Isaac Sim Version: 4.0.0-rc.21+4.0.13872.3e3cb0c9.gl
• OS: Ubuntu 20.04
• GPU: NVIDIA GeForce RTX 3080
• CUDA: 11.7
• GPU Driver: 550.54.14

Checklist

• [ ] I have checked that there is no similar issue in the repo (required) Similar issue exists, but seemly is not applicable for me.
• [ ] I have checked that the issue is not in running Isaac Sim itself and is related to the repo I am not sure