How to fix ModuleNotFoundError: No module named 'iniconfig'

ModuleNotFoundError: No module named 'iniconfig'
Recommended: Install via pip into your active environment.
python -m pip install iniconfig

Verification

Command
python -c "import iniconfig; print(iniconfig.__version__)"
Expected output
Success! iniconfig version x.y.z (e.g., 2.4.0)