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: 5.6.40-70+0~20240421.84+debian12~1.gbp0c0ec4
Date: 27.07.2024 @ 04:00
Script: /search.php?sid=31f5b24b129b481bf0e1d511deabd0b4
Referer: