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 @ 00:50
Script: /wbb/usercp.php?action=buddy&add=73&sid=2d1454a8c0adb74039b55fd34f82d0d9
Referer: http://delftseschaaksite.nl/wbb/usercp.php?action=buddy&add=73&sid=2d1454a8c0adb74039b55fd34f82d0d9