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: 11.05.2024 @ 16:45
Script: /search.php?sid=de1cb34c8a5bcf6e24c865e09111b6fb
Referer: http://stc-board.de/search.php?sid=de1cb34c8a5bcf6e24c865e09111b6fb