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: 24.0.5.1
Apache version: 2.4.54
PHP version: 8.1

Here is a picture to the status of php, apache and most importantly MariaDB
https://picsur.org/i/2b6b6954-e2ab-4982-920e-8f984472e415.jpg
Config.php output
https://picsur.org/i/bdb4cdd0-072f-42e5-ab4a-b07d41d58f16.jpg

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: