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 @ 07:05
Script: /wbb/index.php?sid=71b7b4a0e33ce9573b89aa102d32db4d
Referer: http://delftseschaaksite.nl/wbb/index.php?sid=71b7b4a0e33ce9573b89aa102d32db4d