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 @ 00:38
Script: /wbb/index.php?sid=77a3906d53be5fe579ed12a8f4b6e5d2
Referer: http://delftseschaaksite.nl/wbb/index.php?sid=77a3906d53be5fe579ed12a8f4b6e5d2