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 @ 08:25
Script: /wbb/board.php?boardid=112&sid=ca4a733e4aa801ab8718a4961995ebcd
Referer: http://www.delftseschaaksite.nl/wbb/board.php?boardid=112&sid=ca4a733e4aa801ab8718a4961995ebcd