ModuleNotFoundError: No module named 'bookingformtools'

Question

settings.py

INSTALLED_APPS = [
    "django.contrib.admin",
    "django.contrib.auth",
    "django.contrib.contenttypes",
    "django.contrib.sessions",
    "django.contrib.messages",
    "django.contrib.staticfiles",

    'booking'

    'crispy_forms',
    'formtools',
]

the error, ModuleNotFoundError: No module named 'bookingformtools'

Pip installed django-crispy-forms and django-formtools. Added them to settings.py and the project won't run. Tried using both a virtual environment and otherwise. Not quite sure why I am getting a module error. Pip show is not helping either.