Confirmed this is being triggered by an account that had manually set up a password to the User instance instead to the account.
Removing the django.contrib.auth.backends.ModelBackend from AUTHENTICATION_BACKENDS to avoid returning oopses instead of login errors (password mismatch).
Confirmed this is being triggered by an account that had manually set up a password to the User instance instead to the account.
Removing the django. contrib. auth.backends. ModelBackend from AUTHENTICATION_ BACKENDS to avoid returning oopses instead of login errors (password mismatch).