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 @ 01:54
Script: /wbb/search.php?searchid=295091&sid=6ff5f1d2af8d26b1a1c9ec03498a67a4&page=3
Referer: http://www.delftseschaaksite.nl/wbb/search.php?searchid=295091&sid=6ff5f1d2af8d26b1a1c9ec03498a67a4&page=3