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: 06.07.2025 @ 00:12
Script: /board.php?boardid=9&sid=2441d92f01e7051c4135b10a832aef46
Referer: