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: 10.05.2024 @ 21:08
Script: /team.php?sid=1a6f456a9a57d3b74b43d0105c7b98f8
Referer: http://stc-board.de/team.php?sid=1a6f456a9a57d3b74b43d0105c7b98f8