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: 06.05.2024 @ 00:51
Script: /calendar.php?sid=b53e2c6a0a881d3fe106e923b8431b71
Referer: http://stc-board.de/calendar.php?sid=b53e2c6a0a881d3fe106e923b8431b71