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: 03.05.2024 @ 16:21
Script: /calendar.php?sid=37d5474c81c2ad3e0d3514740e6ce4e3
Referer: http://stc-board.de/calendar.php?sid=37d5474c81c2ad3e0d3514740e6ce4e3