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: 29.04.2024 @ 20:34
Script: /misc.php?action=faq2&sid=b496a773dd29b49e7c1f379062dfe9c2
Referer: http://stc-board.de/misc.php?action=faq2&sid=b496a773dd29b49e7c1f379062dfe9c2