runtime error

Traceback (most recent call last): File "app.py", line 3, in <module> import OpenGL.GL as gl File "/home/user/.local/lib/python3.8/site-packages/OpenGL/GL/__init__.py", line 4, in <module> from OpenGL.GL.VERSION.GL_1_1 import * File "/home/user/.local/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/user/.local/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/user/.local/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'

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