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: 27.07.2024 @ 01:30
Script: /wbb/register.php?sid=b7c8cd5959f50a6a07418d6dc60a73b5
Referer: http://delftseschaaksite.nl/wbb/register.php?sid=b7c8cd5959f50a6a07418d6dc60a73b5