AttributeError: 'NoneType' object has no attribute 'glGetError'

[mazqtpopx]

Hi

I ran a fresh conda env (python 3.9.7), installed pip install memory-maze and pip install gym pygame pillow imageio.

When I run python gui/run_gui.py I get the following error:

python gui/run_gui.py
Creating environment: memory_maze:MemoryMaze-9x9-v0
Traceback (most recent call last):
File "/home/leo/memory-maze/gui/run_gui.py", line 231, in
main()
File "/home/leo/memory-maze/gui/run_gui.py", line 56, in main
env = gym.make(args.env, disable_env_checker=True)
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/gym/envs/registration.py", line 540, in make
importlib.import_module(module)
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1030, in _gcd_import
File "", line 1007, in _find_and_load
File "", line 986, in _find_and_load_unlocked
File "", line 680, in _load_unlocked
File "", line 850, in exec_module
File "", line 228, in _call_with_frames_removed
File "/home/leo/memory-maze/memory_maze/init.py", line 8, in
from . import tasks
File "/home/leo/memory-maze/memory_maze/tasks.py", line 2, in
from dm_control import composer
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/dm_control/composer/init.py", line 18, in
from dm_control.composer.arena import Arena
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/dm_control/composer/arena.py", line 20, in
from dm_control import mjcf
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/dm_control/mjcf/init.py", line 18, in
from dm_control.mjcf.attribute import Asset
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/dm_control/mjcf/attribute.py", line 28, in
from dm_control.mujoco.wrapper import util
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/dm_control/mujoco/init.py", line 18, in
from dm_control.mujoco.engine import action_spec
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/dm_control/mujoco/engine.py", line 41, in
from dm_control import _render
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/dm_control/_render/init.py", line 86, in
Renderer = import_func()
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/dm_control/_render/init.py", line 46, in _import_osmesa
from dm_control._render.pyopengl.osmesa_renderer import OSMesaContext
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/dm_control/_render/pyopengl/osmesa_renderer.py", line 35, in
from OpenGL import GL
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/OpenGL/GL/init.py", line 4, in
from OpenGL.GL.VERSION.GL_1_1 import *
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/OpenGL/GL/VERSION/GL_1_1.py", line 14, in
from OpenGL.raw.GL.VERSION.GL_1_1 import *
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/OpenGL/raw/GL/VERSION/GL_1_1.py", line 7, in
from OpenGL.raw.GL import _errors
File "/home/leo/miniconda3/envs/memory-maze2/lib/python3.9/site-packages/OpenGL/raw/GL/_errors.py", line 4, in
_error_checker = _ErrorChecker( _p, _p.GL.glGetError )
AttributeError: 'NoneType' object has no attribute 'glGetError'

Someone else mentioned something about pyopengl in #30, could it be the same issue?
The versions I have installed are:
memory-maze-1.0.3
mujoco-3.1.4
pyopengl-3.1.7

Did I do something wrong/is there something wrong with my environment or is it the pip installation?

Thanks

[jurgisp]

It seems something to do with pyopengl. What is your OS? I have found a similar issue on Ubuntu mentioned here mcfletch/pyopengl#90, see if the fix suggested in the comment there helps?