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 @ 00:40
Script: /wbb/thread.php?threadid=3040&page=2&sid=90c85b31c0bea32b1dee6b26190f487e
Referer: http://delftseschaaksite.nl/wbb/thread.php?threadid=3040&page=2&sid=90c85b31c0bea32b1dee6b26190f487e