'None' type has no attribute "glGetError"

[Arnie-He]

I just cloned the repo and installed the dependencies in requirements.txt. However, whenever I run the dm-control example I get

_error_checker = _ErrorChecker( _p, _p.GL.glGetError )
AttributeError: 'NoneType' object has no attribute 'glGetError'

I tried to just make _error_checker 'None'. However in that case, I received all kinds of weird errors including this one:

python3 dreamer.py --configs dmc_vision --task dmc_walker_walk --logdir ./logdir/dmc_walker_walk
Logdir logdir/dmc_walker_walk
Create envs.
Could not load episode: Object arrays cannot be loaded when allow_pickle=False
Could not load episode: Object arrays cannot be loaded when allow_pickle=False
Could not load episode: Object arrays cannot be loaded when allow_pickle=False
Could not load episode: Object arrays cannot be loaded when allow_pickle=False
/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/gym/logger.py:34: UserWarning: WARN: Box bound precision lowered by casting to float32
warnings.warn(colorize("%s: %s" % ("WARN", msg % args), "yellow"))
Action Space Box([-1. -1. -1. -1. -1. -1.], [1. 1. 1. 1. 1. 1.], (6,), float32)
Prefill dataset (500 steps).
Traceback (most recent call last):
File "/home/arnie/Documents/dreamerv3-torch/dreamer.py", line 369, in
main(parser.parse_args(remaining))
File "/home/arnie/Documents/dreamerv3-torch/dreamer.py", line 274, in main
state = tools.simulate(
File "/home/arnie/Documents/dreamerv3-torch/tools.py", line 155, in simulate
results = [r() for r in results]
File "/home/arnie/Documents/dreamerv3-torch/tools.py", line 155, in
results = [r() for r in results]
File "/home/arnie/Documents/dreamerv3-torch/parallel.py", line 209, in
return lambda: self._env.reset()
File "/home/arnie/Documents/dreamerv3-torch/envs/wrappers.py", line 117, in reset
return self.env.reset()
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/gym/core.py", line 251, in reset
return self.env.reset(**kwargs)
File "/home/arnie/Documents/dreamerv3-torch/envs/wrappers.py", line 26, in reset
return self.env.reset()
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/gym/core.py", line 251, in reset
return self.env.reset(**kwargs)
File "/home/arnie/Documents/dreamerv3-torch/envs/dmc.py", line 69, in reset
obs["image"] = self.render()
File "/home/arnie/Documents/dreamerv3-torch/envs/dmc.py", line 77, in render
return self._env.physics.render(*self._size, camera_id=self._camera)
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/mujoco/engine.py", line 216, in render
camera = Camera(
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/mujoco/engine.py", line 695, in init
if self._physics.contexts.mujoco is not None:
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/mujoco/engine.py", line 526, in contexts
self._make_rendering_contexts()
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/mujoco/engine.py", line 509, in _make_rendering_contexts
render_context = _render.Renderer(
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/base.py", line 63, in init
ctx.call(self._platform_init, max_width, max_height)
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/executor/render_executor.py", line 196, in call
return self._call_locked(func, *args, **kwargs)
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/executor/render_executor.py", line 206, in _call_locked
return self._executor.submit(func, *args, **kwargs).result()
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/concurrent/futures/_base.py", line 440, in result
return self.__get_result()
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/concurrent/futures/_base.py", line 389, in __get_result
raise self._exception
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/concurrent/futures/thread.py", line 52, in run
result = self.fn(*self.args, **self.kwargs)
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/pyopengl/osmesa_renderer.py", line 49, in _platform_init
self._context = osmesa.OSMesaCreateContextExt(
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/OpenGL/platform/baseplatform.py", line 423, in call
raise error.NullFunctionError(
OpenGL.error.NullFunctionError: Attempt to call an undefined function OSMesaCreateContextExt, check for bool(OSMesaCreateContextExt) before calling
Error in atexit._run_exitfuncs:
Traceback (most recent call last):
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/executor/render_executor.py", line 214, in terminate
self._call_locked(cleanup_callable)
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/executor/render_executor.py", line 206, in _call_locked
return self._executor.submit(func, *args, **kwargs).result()
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/concurrent/futures/thread.py", line 161, in submit
raise RuntimeError('cannot schedule new futures after shutdown')
RuntimeError: cannot schedule new futures after shutdown
Exception ignored in: <function ContextBase.del at 0x7f3707be45e0>
Traceback (most recent call last):
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/base.py", line 118, in del
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/base.py", line 115, in _free_unconditionally
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/executor/render_executor.py", line 214, in terminate
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/executor/render_executor.py", line 206, in _call_locked
File "/home/arnie/miniconda3/envs/dreamerv3-torch/lib/python3.9/concurrent/futures/thread.py", line 161, in submit
RuntimeError: cannot schedule new futures after shutdown

I'm sure that my packages have the same version as requirements.txt asked. Could you help on understanding this problem?

[Jeong-zju]

I exactly have the same problem.
I run the command python3 dreamer.py --configs dmc_vision --task dmc_walker_walk --logdir ./logdir/dmc_walker_walk.
Here is the output:
Logdir logdir/dmc_walker_walk
Create envs.
Traceback (most recent call last):
File "/home/jeong/dreamerv3-torch/dreamer.py", line 365, in
main(parser.parse_args(remaining))
File "/home/jeong/dreamerv3-torch/dreamer.py", line 238, in main
train_envs = [make("train", i) for i in range(config.envs)]
File "/home/jeong/dreamerv3-torch/dreamer.py", line 238, in
train_envs = [make("train", i) for i in range(config.envs)]
File "/home/jeong/dreamerv3-torch/dreamer.py", line 237, in
make = lambda mode, id: make_env(config, mode, id)
File "/home/jeong/dreamerv3-torch/dreamer.py", line 151, in make_env
env = dmc.DeepMindControl(
File "/home/jeong/dreamerv3-torch/envs/dmc.py", line 13, in init
from dm_control import suite
File "/home/jeong/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/suite/init.py", line 24, in
from dm_control.suite import acrobot
File "/home/jeong/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/suite/acrobot.py", line 20, in
from dm_control import mujoco
File "/home/jeong/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/mujoco/init.py", line 18, in
from dm_control.mujoco.engine import action_spec
File "/home/jeong/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/mujoco/engine.py", line 41, in
from dm_control import _render
File "/home/jeong/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/init.py", line 86, in
Renderer = import_func()
File "/home/jeong/miniconda3/envs/dreamerv3-torch/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/jeong/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/dm_control/_render/pyopengl/osmesa_renderer.py", line 35, in
from OpenGL import GL
File "/home/jeong/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/OpenGL/GL/init.py", line 4, in
from OpenGL.GL.VERSION.GL_1_1 import *
File "/home/jeong/miniconda3/envs/dreamerv3-torch/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/jeong/miniconda3/envs/dreamerv3-torch/lib/python3.9/site-packages/OpenGL/raw/GL/VERSION/GL_1_1.py", line 7, in
from OpenGL.raw.GL import _errors
File "/home/jeong/miniconda3/envs/dreamerv3-torch/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'