How do I solve this ModuleNotFoundError: No module named 'django_mfa' error?

Question

*I want to implement MFA in my python project but I get this error message:

Error running WSGI application

2021-12-19 19:49:30,255: ModuleNotFoundError: No module named 'django_mfa'

2021-12-19 19:49:30,255:   File "/var/www/XXX_pythonanywhere_com_wsgi.py", line 18, in <module>
2021-12-19 19:49:30,256:     application = get_wsgi_application()
2021-12-19 19:49:30,256: 
2021-12-19 19:49:30,256:   File "/home/XXX/.virtualenvs/groupx-virtualenv/lib/python3.8/site-packages/django/core/wsgi.py", line 12, in get_wsgi_application
2021-12-19 19:49:30,256:     django.setup(set_prefix=False)
2021-12-19 19:49:30,256: 
2021-12-19 19:49:30,256:   File "/home/XXX/.virtualenvs/groupx-virtualenv/lib/python3.8/site-packages/django/__init__.py", line 24, in setup
2021-12-19 19:49:30,256:     apps.populate(settings.INSTALLED_APPS)
2021-12-19 19:49:30,257: 
2021-12-19 19:49:30,257:   File "/home/XXX/.virtualenvs/groupx-virtualenv/lib/python3.8/site-packages/django/apps/registry.py", line 91, in populate
2021-12-19 19:49:30,257:     app_config = AppConfig.create(entry)
2021-12-19 19:49:30,257: 
2021-12-19 19:49:30,257:   File "/home/XXX/.virtualenvs/groupx-virtualenv/lib/python3.8/site-packages/django/apps/config.py", line 223, in create
2021-12-19 19:49:30,257:     import_module(entry)
django_project-
               - my_site/urls.py
               - django-mfa/django_mfa/urls.py`

1: django_project/my_site/urls.py

from django.urls import path,include
from django.urls import url
from django.conf import settings
urlpatterns = [
    .....
    url(r'^settings/', include('django_mfa.urls', namespace="mfa")),
    .....`

] 2. django_project/django-mfa/django_mfa/urls.py`

from .views import *
from django.urls import path, include
from django.conf.urls import url
from . import views
security_patterns = ([
    path('verify-second-factor-options/',
         verify_second_factor, name='verify_second_factor'),
    path('verify/token/u2f/', views.verify_second_factor_u2f,
         name='verify_second_factor_u2f'),
    path('verify/token/totp/', verify_second_factor_totp,
         name='verify_second_factor_totp'),
    path('keys/', views.keys, name='u2f_keys'),
    path('add-key/', views.add_key, name='add_u2f_key'),
    path('security/', security_settings, name='security_settings'),
    path('mfa/configure/', configure_mfa, name='configure_mfa'),
    path('mfa/enable/', enable_mfa, name='enable_mfa'),
    path('mfa/disable/', disable_mfa, name='disable_mfa'),
    path('recovery/codes/', recovery_codes, name='recovery_codes'),
    path('recovery/codes/downloads/', recovery_codes_download,
         name='recovery_codes_download'),
], 'mfa')
urlpatterns = [
    path("", include(security_patterns)),
]

NB: I installed the MFA in the virual environment: groupx-virtualenv in Python Anywere PAAS*