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 @ 01:35
Script: /wbb/search.php?action=user&userid=151&sid=ac8b6f8c83883e8ae34e7a97f49981d5
Referer: http://www.delftseschaaksite.nl/wbb/search.php?action=user&userid=151&sid=ac8b6f8c83883e8ae34e7a97f49981d5