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 @ 02:48
Script: /wbb/index.php?sid=c8b7c4a5a5d778bbb4be53acd7f51720
Referer: http://delftseschaaksite.nl/wbb/index.php?sid=c8b7c4a5a5d778bbb4be53acd7f51720