Extensions are not loading

Omniverse Isaac Sim
1

I don’t know why the extensions are not loading when I start isaac sim, I have the following error I do not know if it is related to this issue:

2023-07-09 14:51:45 [3,061ms] [Error] [carb.scripting-python.plugin] TypeError: unsupported operand type(s) for +: ‘NoneType’ and ‘str’

At:
/home/amirhossein/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.examples/omni/isaac/examples/franka_nut_and_bolt/franka_nut_and_bolt.py(84): init
/home/amirhossein/.local/share/ov/pkg/isaac_sim-2022.2.1/exts/omni.isaac.examples/omni/isaac/examples/franka_nut_and_bolt/franka_nut_and_bolt_extension.py(25): on_startup
/home/amirhossein/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(147): _startup_ext
/home/amirhossein/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/carb/profiler/init.py(81): wrapper
/home/amirhossein/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(198): startup
/home/amirhossein/.local/share/ov/pkg/isaac_sim-2022.2.1/kit/kernel/py/omni/ext/_impl/_internal.py(285): startup_extension
PythonExtension.cpp::startup()(2):

2023-07-09 14:51:45 [3,061ms] [Error] [omni.ext.plugin] [ext: omni.isaac.examples-1.5.6] Failed to startup python extension.

I have reinstalled Isaac Sim once but this error still persists! any suggestion on what is happening here?

2

I am also not able to use Python using ./python.sh
I would again encounter the following error:
TypeError: unsupported operand type(s) for +: ‘NoneType’ and ‘str’
2023-07-09 15:28:04 [5,780ms] [Warning] [carb.audio.context] 1 contexts were leaked
./python.sh: line 41: 379376 Segmentation fault (core dumped) $python_exe “$@” $args
There was an error running python

3

Hi @ahn.paf

According to exts/omni.isaac.examples/omni/isaac/examples/franka_nut_and_bolt/franka_nut_and_bolt.py file (line 84), there is a problem trying to find the root path to the Isaac Sim assets on a Nucleus server.

83    self.nucleus_server = get_assets_root_path()
84    self.asset_folder = self.nucleus_server + "/Isaac/Samples/Examples/FrankaNutBolt/"

Make sure Nucleus is installed and running… and additionally, share the logs to identify specific the specific problem

1 Like
4

great that worked! Thank you for your help!
I still do not understand how the nucleus server works and what its usage is! Is there any video or guidance on that?
I made an account at first but later I had to make another one to be able to log in to Isaac Sim! How does it all work?
I appreciate your time and response

5

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