Seafile Pro 7.1.9: Seahub failed to start (Solved)

Hi there.
Long time seafile user here.
Yesterday seahub didn’t start after a restart in the server.
I can’t seem to see an error that helped me understand whats happening. In the logs/ files there is nothing (I believe that’s because seahub fails very early).
Seafile is running ok.

I’m in Arch Linux, 5.9.11-arch2-1, and using Seafile Pro 7.1.9.

Can I manually start seahub in a debug mode to see if I understand whats the problem?

sudo systemctl status seahub
● seahub.service - Seahub server
Loaded: loaded (/etc/systemd/system/seahub.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Thu 2020-12-03 20:46:34 WET; 2min 37s ago
Process: 1473 ExecStart=/srv/seafile/seafile-server-latest/seahub.sh start (code=exited, status=1/FAILURE)
Main PID: 1473 (code=exited, status=1/FAILURE)

Dec 03 20:46:28 server systemd[1]: Starting Seahub server…
Dec 03 20:46:28 server seahub.sh[1473]: LC_ALL is not set in ENV, set to en_US.UTF-8
Dec 03 20:46:28 server seahub.sh[1473]: Starting seahub at port 8000 …
Dec 03 20:46:34 server seahub.sh[1473]: Error:Seahub failed to start.
Dec 03 20:46:34 server seahub.sh[1473]: Please try to run “./seahub.sh start” again
Dec 03 20:46:34 server systemd[1]: seahub.service: Main process exited, code=exited, status=1/FAILURE
Dec 03 20:46:34 server systemd[1]: seahub.service: Failed with result ‘exit-code’.
Dec 03 20:46:34 server systemd[1]: Failed to start Seahub server.

Solved.

vi conf/gunicorn.conf.py

daemon = False

sudo pip3 install --timeout=3600 captcha django-pylibmc django-simple-captcha

vi conf/gunicorn.conf.py

daemon = True