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 @ 08:05
Script: /wbb/board.php?boardid=17&sid=64ac6937c5087f274ccc1c2f5d613d0d
Referer: http://delftseschaaksite.nl/wbb/board.php?boardid=17&sid=64ac6937c5087f274ccc1c2f5d613d0d