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 @ 00:55
Script: /wbb/profile.php?userid=4&sid=ea9d46e3fa2f3f42b9fd8e6fcdb1131b
Referer: http://delftseschaaksite.nl/wbb/profile.php?userid=4&sid=ea9d46e3fa2f3f42b9fd8e6fcdb1131b