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 @ 00:33
Script: /wbb/search.php?action=user&userid=207&sid=3ffe17a380e3630b2f865c11fb3b2bd5
Referer: http://www.delftseschaaksite.nl/wbb/search.php?action=user&userid=207&sid=3ffe17a380e3630b2f865c11fb3b2bd5