When I run the routine isaaclab.bat -p scripts\tutorials\00_sim\create_empty.py I get an error"No module named 'carb._carb'"

Omniverse Isaac Sim
1

isaacsim
5.1.0

Operating System

Windows 10

GPU Information

  • Model: 5070ti
  • Driver Version: 610.62

Topic Description

Detailed Description

I followed the tutorial to install isaacsim and installed isaaclab in conda in py11. ( isaaclab.bat --conda my_env )
There is no problem with isaacsim installation and can be opened. But when verifying the installation of isaaclab, I ran “isaaclab.bat -p scripts\tutorials\00_sim\create_empty.py” in the tutorial, and an error occurred

Installation using Isaac Sim Pre-built Binaries — Isaac Lab Documentation

Error Messages

(isaac_lab) G:\ISAACLAB\IsaacLab>isaaclab.bat -p scripts\tutorials\00_sim\create_empty.py
[INFO] Using python from: G:\miniconda3\envs\isaac_lab\python.exe
[Warning] Unable to expose 'isaacsim.simulation_app' API: No module named 'carb._carb'
[WARN][AppLauncher]: There are no arguments attached to the ArgumentParser object. If you have your own arguments, please load your own arguments before calling the `AppLauncher.add_app_launcher_args` method. This allows the method to check the validity of the arguments and perform checks for argument names.
[INFO][AppLauncher]: Using device: cuda:0
[INFO][AppLauncher]: Loading experience file: G:\ISAACLAB\IsaacLab\apps\isaaclab.python.kit
Traceback (most recent call last):
  File "G:\ISAACLAB\IsaacLab\scripts\tutorials\00_sim\create_empty.py", line 29, in <module>
    app_launcher = AppLauncher(args_cli)
                   ^^^^^^^^^^^^^^^^^^^^
  File "G:\ISAACLAB\IsaacLab\source\isaaclab\isaaclab\app\app_launcher.py", line 131, in __init__
    self._create_app()
  File "G:\ISAACLAB\IsaacLab\source\isaaclab\isaaclab\app\app_launcher.py", line 823, in _create_app
    self._app = SimulationApp(self._sim_app_config, experience=self._sim_experience_file)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: 'NoneType' object is not callable

Additional Information

What I’ve Tried

I tried using “python scripts\tutorials\00_sim\create_empty.py” with the same result

2

Thanks for reporting this. Since this looks like an Isaac Lab-related installation/runtime issue, please open a post in the Isaac Lab GitHub Discussions for support questions, or a GitHub Issue if you’ve confirmed it’s a reproducible bug with a clear scope. You can find the project here: isaac-sim/IsaacLab.