Fatal Python error on Windows 10 when I try to access Python from command prompt

Question

I did everything from these answers on a previous thread and nothing changed. Even uninstalling Python did not improve the situation. Everything was working fine but all of a sudden it stopped working.

    Could not find platform independent libraries <prefix>
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
Python path configuration:
  PYTHONHOME = (not set)
  PYTHONPATH = (not set)
  program name = 'python'
  isolated = 0
  environment = 1
  user site = 1
  import site = 1
  sys._base_executable = 'C:\\iverilog\\gtkwave\\bin\\python.exe'
  sys.base_prefix = 'D:\\a\\_temp\\msys\\msys64\\mingw64'
  sys.base_exec_prefix = 'D:\\a\\_temp\\msys\\msys64\\mingw64'
  sys.executable = 'C:\\iverilog\\gtkwave\\bin\\python.exe'
  sys.prefix = 'D:\\a\\_temp\\msys\\msys64\\mingw64'
  sys.exec_prefix = 'D:\\a\\_temp\\msys\\msys64\\mingw64'
  sys.path = [
    'D:\\a\\_temp\\msys\\msys64\\mingw64\\lib\\python38.zip',
    'D:\\a\\_temp\\msys\\msys64\\mingw64\\lib\\python3.8',
    'D:\\a\\_temp\\msys\\msys64\\mingw64\\lib\\python3.8',
    'D:\\a\\_temp\\msys\\msys64\\mingw64\\lib\\lib-dynload',
  ]
Fatal Python error: init_fs_encoding: failed to get the Python codec of the filesystem encoding
Python runtime state: core initialized
ModuleNotFoundError: No module named 'encodings'

Current thread 0x000029e8 (most recent call first):
<no Python frame>