SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
mysql error number: 2002
Date: 22.05.2025 @ 12:34
Script: /board.php?boardid=29&sid=c1d392a18a1a9d344f9f9d0601aa5481&daysprune=1000&sortfield=lastposttime&sortorder=DESC&page=2
Referer: