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 @ 05:33
Script: /wbb/usercp.php?action=buddy&add=268&sid=731dc3e5dfb4c7e649f410c2d94996d2
Referer: http://www.delftseschaaksite.nl/wbb/usercp.php?action=buddy&add=268&sid=731dc3e5dfb4c7e649f410c2d94996d2