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: 21.05.2024 @ 06:24
Script: /wbb/login.php?sid=4be4ca9e8a833f7a6c5a5ca27cf39007
Referer: http://delftseschaaksite.nl/wbb/login.php?sid=4be4ca9e8a833f7a6c5a5ca27cf39007