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: 09.05.2024 @ 21:22
Script: /misc.php?action=faq&sid=afd5f49ffb5b7ab011a231e1fd9c9a61
Referer: http://stc-board.de/misc.php?action=faq&sid=afd5f49ffb5b7ab011a231e1fd9c9a61