How to fix ModuleNotFoundError: No module named 'werkzeug'

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

Verification

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