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 @ 03:32
Script: /wbb/login.php?sid=e5e66acd9d433b7013bf2cd594505d9e
Referer: http://www.delftseschaaksite.nl/wbb/login.php?sid=e5e66acd9d433b7013bf2cd594505d9e