[Question] glGetError

[FrankSinatral]

Required prerequisites

• I have read the documentation https://safety-gymnasium.readthedocs.io.
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• Consider asking first in a Discussion.

Questions

Thanks for your work, when I run the example code, I encounter the following error
Traceback (most recent call last): File "examples/env_test.py", line 1, in <module> import safety_gymnasium File "/home/fank/Documents/safety-gymnasium/safety_gymnasium/__init__.py", line 19, in <module> from gymnasium import make as gymnasium_make File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/gymnasium/__init__.py", line 12, in <module> from gymnasium.envs.registration import ( File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/gymnasium/envs/__init__.py", line 382, in <module> load_plugin_envs() File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/gymnasium/envs/registration.py", line 600, in load_plugin_envs fn = plugin.load() File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/importlib_metadata/__init__.py", line 189, in load module = import_module(match.group('module')) File "/home/fank/.conda/envs/safegym/lib/python3.8/importlib/__init__.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/gymnasium_robotics/__init__.py", line 5, in <module> from gymnasium_robotics.envs.maze import maps File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/gymnasium_robotics/envs/maze/__init__.py", line 1, in <module> from gymnasium_robotics.envs.maze.ant_maze import AntMazeEnv File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/gymnasium_robotics/envs/maze/ant_maze.py", line 20, in <module> from gymnasium.envs.mujoco.ant_v4 import AntEnv File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/gymnasium/envs/mujoco/__init__.py", line 1, in <module> from gymnasium.envs.mujoco.mujoco_env import MujocoEnv, MuJocoPyEnv # isort:skip File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/gymnasium/envs/mujoco/mujoco_env.py", line 19, in <module> import mujoco File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/mujoco/__init__.py", line 47, in <module> from mujoco.gl_context import * File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/mujoco/gl_context.py", line 38, in <module> from mujoco.osmesa import GLContext as _GLContext File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/mujoco/osmesa/__init__.py", line 31, in <module> from OpenGL import GL File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/OpenGL/GL/__init__.py", line 4, in <module> from OpenGL.GL.VERSION.GL_1_1 import * File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/OpenGL/GL/VERSION/GL_1_1.py", line 14, in <module> from OpenGL.raw.GL.VERSION.GL_1_1 import * File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/OpenGL/raw/GL/VERSION/GL_1_1.py", line 7, in <module> from OpenGL.raw.GL import _errors File "/home/fank/.conda/envs/safegym/lib/python3.8/site-packages/OpenGL/raw/GL/_errors.py", line 4, in <module> _error_checker = _ErrorChecker( _p, _p.GL.glGetError ) AttributeError: 'NoneType' object has no attribute 'glGetError', this error is induced when running the code import safe-gymnasium, I do alll the codes includingecho "export MUJOCO_GL=osmesa" >> ~/.bashrc source ~/.bashrc apt-get install libosmesa6-dev apt-get install python3-opengland I am using Ubuntu 22.04, I am wondering how should I solve the problem, thanks~

[muchvo]

It appears the issue might be related to MuJoCo's rendering dependencies. I found several similar issues on Google. Have you tried any of the suggested solutions there? As a last resort, you might refer to this Colab notebook; I’ve just tested it, and the environment there still renders correctly. It could be helpful as a reference.