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 @ 11:49
Script: /board.php?boardid=4&sid=5b978d75e6c5bf7b43566e31087d4919
Referer: