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

[xkq1qkx]

(dreamerv3) xkq@xkq-Legion:~/Documents/dreamerv3_torch$ python3 dreamer.py --configs dmc_vision --task dmc_walker_walk --logdir ./logdir/dmc_walker_walk

Logdir logdir/dmc_walker_walk
Create envs.
Traceback (most recent call last):
File "/home/xkq/Documents/dreamerv3_torch/dreamer.py", line 365, in
main(parser.parse_args(remaining))
File "/home/xkq/Documents/dreamerv3_torch/dreamer.py", line 238, in main
train_envs = [make("train", i) for i in range(config.envs)]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/xkq/Documents/dreamerv3_torch/dreamer.py", line 238, in
train_envs = [make("train", i) for i in range(config.envs)]
^^^^^^^^^^^^^^^^
File "/home/xkq/Documents/dreamerv3_torch/dreamer.py", line 237, in
make = lambda mode, id: make_env(config, mode, id)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/xkq/Documents/dreamerv3_torch/dreamer.py", line 151, in make_env
env = dmc.DeepMindControl(
^^^^^^^^^^^^^^^^^^^^
File "/home/xkq/Documents/dreamerv3_torch/envs/dmc.py", line 13, in init
from dm_control import suite
File "/home/xkq/miniconda3/envs/dreamerv3/lib/python3.11/site-packages/dm_control/suite/init.py", line 24, in
from dm_control.suite import acrobot
File "/home/xkq/miniconda3/envs/dreamerv3/lib/python3.11/site-packages/dm_control/suite/acrobot.py", line 20, in
from dm_control import mujoco
File "/home/xkq/miniconda3/envs/dreamerv3/lib/python3.11/site-packages/dm_control/mujoco/init.py", line 18, in
from dm_control.mujoco.engine import action_spec
File "/home/xkq/miniconda3/envs/dreamerv3/lib/python3.11/site-packages/dm_control/mujoco/engine.py", line 41, in
from dm_control import _render
File "/home/xkq/miniconda3/envs/dreamerv3/lib/python3.11/site-packages/dm_control/_render/init.py", line 86, in
Renderer = import_func()
^^^^^^^^^^^^^
File "/home/xkq/miniconda3/envs/dreamerv3/lib/python3.11/site-packages/dm_control/_render/init.py", line 46, in _import_osmesa
from dm_control._render.pyopengl.osmesa_renderer import OSMesaContext
File "/home/xkq/miniconda3/envs/dreamerv3/lib/python3.11/site-packages/dm_control/_render/pyopengl/osmesa_renderer.py", line 35, in
from OpenGL import GL
File "/home/xkq/miniconda3/envs/dreamerv3/lib/python3.11/site-packages/OpenGL/GL/init.py", line 4, in
from OpenGL.GL.VERSION.GL_1_1 import *
File "/home/xkq/miniconda3/envs/dreamerv3/lib/python3.11/site-packages/OpenGL/GL/VERSION/GL_1_1.py", line 14, in
from OpenGL.raw.GL.VERSION.GL_1_1 import *
File "/home/xkq/miniconda3/envs/dreamerv3/lib/python3.11/site-packages/OpenGL/raw/GL/VERSION/GL_1_1.py", line 7, in
from OpenGL.raw.GL import _errors
File "/home/xkq/miniconda3/envs/dreamerv3/lib/python3.11/site-packages/OpenGL/raw/GL/_errors.py", line 4, in
_error_checker = _ErrorChecker( _p, _p.GL.glGetError )
^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'glGetError'

[JesusmiCaH]

Same problem bro, have you found any solutions?

[xkq1qkx]

Sorry, I haven't solve it. But if tensorflow is acceptable , you can try the tensorflow version. I run it successfully. 许焜琦 ***@***.*** Original: From：TownKuku ***@***.***>Date：2024-10-17 09:36:41(中国 (GMT+08:00))To：NM512/dreamerv3-torch ***@***.***>Cc：xkq1qkx ***@***.***> , Author ***@***.***>Subject：Re: [NM512/dreamerv3-torch] AttributeError: 'NoneType' object has no attribute 'glGetError' (Issue #65) Same problem bro, have you found any solutions? — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[yongzhengqi]

Solved by running conda install -c conda-forge mesalib

See more at: conda-forge/mujoco-feedstock#48

[danielefoffano]

Had the same problem using Ubuntu 24.04 and venv, solved with

sudo apt-get update && sudo apt-get install ffmpeg libsm6 libxext6 -y
sudo apt-get install -y libgl1-mesa-dev libosmesa6-dev

As suggested here.

[JiBingdong]

Solved by running conda install -c conda-forge mesalib

See more at: conda-forge/mujoco-feedstock#48

thanks，i solved this error by running conda install -c conda-forge mesalib

[xmustu]

Solved by install OSMesa, like sudo yum install mesa-libOSMesa-devel in CentOS Linux

[zhangk1551]

I ran into the same issue.

TL;DR: Comment out this line.

That line forces MuJoCo to use osmesa, which overrides the MUJOCO_GL environment variable — even if you’ve set it externally.
Since osmesa is for CPU-based rendering, most users will want to use egl or glfw for GPU acceleration instead.
See DeepMind’s reference implementation for context: link

[NM512]

Hi,

Thanks everyone for sharing the solution!
I'll add a troubleshooting note to the README pointing to this discussion for future reference.