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 @ 08:22
Script: /wbb/board.php?boardid=14&sid=033309152eb8e0378a69db7f120f4f7d
Referer: http://delftseschaaksite.nl/wbb/board.php?boardid=14&sid=033309152eb8e0378a69db7f120f4f7d