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: 21.01.2025 @ 22:45
Script: /board.php?boardid=39&sid=7473cd3e2cec435fc9f775a2abfe5a2d
Referer: