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 @ 01:56
Script: /wbb/search.php?action=user&userid=134&sid=3bde61441f62024cf5fd40b9d2e8114e
Referer: http://delftseschaaksite.nl/wbb/search.php?action=user&userid=134&sid=3bde61441f62024cf5fd40b9d2e8114e