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 @ 00:20
Script: /wbb/addreply.php?postid=24515&action=quote&sid=6a08bc7b025a5890596e660436d9adcb
Referer: http://delftseschaaksite.nl/wbb/addreply.php?postid=24515&action=quote&sid=6a08bc7b025a5890596e660436d9adcb