'Whoops, looks like something went wrong' Post Update

I have been running Akaunting (Docker on Unraid) for a while now.
I upgraded the Akaunting container a few days ago and have been unable to get it back up and running.

The database (MariaDB) looks fine.

Any tips from the developers on how to troubleshoot or get more detailed logs?

Here are the logs from the container:
Module rewrite already enabled
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.18.0.13. Set the 'ServerName' directive globally to suppress this message
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.18.0.13. Set the 'ServerName' directive globally to suppress this message
[Wed Jul 14 10:30:52.489931 2021] [mpm_prefork:notice] [pid 1] AH00163: Apache/2.4.38 (Debian) PHP/7.4.21 configured -- resuming normal operations
[Wed Jul 14 10:30:52.489965 2021] [core:notice] [pid 1] AH00094: Command line: 'apache2 -D FOREGROUND'