How to fix ModuleNotFoundError: No module named 'toml'

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

Verification

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