Traceback (most recent call last):
  File "/root/miniconda3/lib/python3.8/site-packages/gym/envs/classic_control/rendering.py", line 27, in <module>
    from pyglet.gl import *
  File "/root/miniconda3/lib/python3.8/site-packages/pyglet/gl/__init__.py", line 95, in <module>
    from pyglet.gl.gl import *
  File "/root/miniconda3/lib/python3.8/site-packages/pyglet/gl/gl.py", line 45, in <module>
    from pyglet.gl.lib import link_GL as _link_function
  File "/root/miniconda3/lib/python3.8/site-packages/pyglet/gl/lib.py", line 149, in <module>
    from pyglet.gl.lib_glx import link_GL, link_GLU, link_GLX
  File "/root/miniconda3/lib/python3.8/site-packages/pyglet/gl/lib_glx.py", line 46, in <module>
    glu_lib = pyglet.lib.load_library('GLU')
  File "/root/miniconda3/lib/python3.8/site-packages/pyglet/lib.py", line 168, in load_library
    raise ImportError('Library "%s" not found.' % names[0])
ImportError: Library "GLU" not found.
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "TrainMaze.py", line 2, in <module>
    from MazeEnv import Maze
  File "/home/my-mcpg/MazeEnv.py", line 5, in <module>
    from gym.envs.classic_control import rendering
  File "/root/miniconda3/lib/python3.8/site-packages/gym/envs/classic_control/rendering.py", line 29, in <module>
    raise ImportError(
ImportError:
    Error occurred while running `from pyglet.gl import *`
    HINT: make sure you have OpenGL installed. On Ubuntu, you can run 'apt-get install python-opengl'.
    If you're running on a server, you may need a virtual frame buffer; something like this should work:
    'xvfb-run -s "-screen 0 1400x900x24" python <your_script.py>'

HINT: make sure you have OpenGL installed. On Ubuntu, you can run 'apt-get install python-opengl'.

apt-get install python-opengl

Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package python-opengl

sudo apt-get update

apt-get install python-opengl