No module named 'u2flib_server'

[iXioN]

After a clean install on a new project the u2flib_server is missing

Here is the ligne I used to install Django-mfa;

$ pip install django-mfa
Collecting django-mfa
  Downloading django_mfa-2.1-py3-none-any.whl (33 kB)
Requirement already satisfied: Django>=2.2.19 in ~/.venv/lib/python3.7/site-packages (from django-mfa) (2.2.20)
Requirement already satisfied: sqlparse>=0.2.2 in ~/.venv/lib/python3.7/site-packages (from Django>=2.2.19->django-mfa) (0.4.1)
Requirement already satisfied: pytz in ~/.venv/lib/python3.7/site-packages (from Django>=2.2.19->django-mfa) (2021.1)
Installing collected packages: django-mfa
Successfully installed django-mfa-2.1

after stating up the installed_apps, middleware and urls when I run my Django server I get this error stack

  File "~/.venv/lib/python3.7/site-packages/django_mfa/urls.py", line 1, in <module>
    from .views import *
  File "~/.venv/lib/python3.7/site-packages/django_mfa/views.py", line 19, in <module>
    from u2flib_server import u2f
ModuleNotFoundError: No module named 'u2flib_server'

in fact, this line

django-mfa/django_mfa/views.py

Line 19 in f51a06b

from u2flib_server import u2f

need the package python-u2flib-server which is not in the requirements (only in the sandbox/requirements.txt how are not installed via pip install)

[ashwin31]

No longer applicable. U2F was removed entirely in 4.0 — u2flib_server is not a dependency and nothing in the package imports it.

The replacement is WebAuthn (via fido2), which covers the same hardware keys plus platform passkeys. Note there is no migration path for existing U2F credentials: affected users re-enroll. See docs/upgrading.md.