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 @ 00:18
Script: /wbb/login.php?sid=bf0273eb5c83e42c8cc21d853d0aa89c
Referer: http://www.delftseschaaksite.nl/wbb/login.php?sid=bf0273eb5c83e42c8cc21d853d0aa89c