503 Service Unavailable - Possible MariaDb Error

Hi dear people,
i have a 503 Server Error,
but can’t find any solution.

I suspect the database is at fault here, as I get multiple Error when I check the status, but can’t make out how to solve them.
Nextcloud version:
Apache version: 2.4.54
PHP version: 8.1

Here is a picture to the status of php, apache and most importantly MariaDB
Config.php output

The log is unfortunately wildly filled with an Error form, a misconfigured add-on I forgot to install.
I skimmed through the log and found since the beginning of the problem no other things.

Thank you for your help :slight_smile: