error reading bcrypt version

[sleepy-nols]

when installing the latest version on debian bookworm via the .deb package I get the following error when trying to login with a user.

Jan 13 23:07:11 abrechnung-test abrechnung[7653]: [2025-01-13 23:07:11,870] (trapped) error reading bcrypt version
Jan 13 23:07:11 abrechnung-test abrechnung[7653]: Traceback (most recent call last):
Jan 13 23:07:11 abrechnung-test abrechnung[7653]:   File "/opt/venvs/abrechnung/lib/python3.11/site-packages/passlib/handlers/bcrypt.py", line 620, in _load_backend_mixin
Jan 13 23:07:11 abrechnung-test abrechnung[7653]:     version = _bcrypt.__about__.__version__
Jan 13 23:07:11 abrechnung-test abrechnung[7653]:               ^^^^^^^^^^^^^^^^^
Jan 13 23:07:11 abrechnung-test abrechnung[7653]: AttributeError: module 'bcrypt' has no attribute '__about__'