gunicorn gives error messages while loading django admin

[ademant]

Describe the bug

several problems:

1. Login only possible via yunohost; direct login on funkwhale not possible
2. Password reset not possible
3. Django admin via /api/admin gives error messages in syslog

Context

• Hardware: *VPS bought online
• YunoHost version: 11.2.4
• I have access to my server: *Through SSH
• Are you in a special context or did you perform some particular tweaking on your YunoHost instance?: *no

Steps to reproduce

• If the error occurs in your browser, explain what you did:
  On a Yunohost 11.2.4 install fresh funkwhale 1.3.3-ynh1.
  Try to access /api/admin
  read syslog

Expected behavior

When funkwhale is installed, a logon should be possible without login to yunohost. An administration via django should be possible.

Logs

gunicorn.log