SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error: Connection refused
mysql error number: 2002
mysql version: unknown
php version: 5.6.40-57+0~20211119.60+debian9~1.gbp8a9bd1
Date: 07.05.2024 @ 17:31
Script: /misc.php?action=faq&sid=d50bf13fe621492e4d0442b8c7a14582
Referer: http://stc-board.de/misc.php?action=faq&sid=d50bf13fe621492e4d0442b8c7a14582