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 @ 03:56
Script: /wbb/index.php?sid=ac3cdab0fab1aa6e098f215ac4ae53f5
Referer: http://www.delftseschaaksite.nl/wbb/index.php?sid=ac3cdab0fab1aa6e098f215ac4ae53f5