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 @ 07:02
Script: /wbb/misc.php?action=viewip&postid=20631&sid=ea9180dbeae69e2c61cbfcfa0f91c605
Referer: http://www.delftseschaaksite.nl/wbb/misc.php?action=viewip&postid=20631&sid=ea9180dbeae69e2c61cbfcfa0f91c605