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: 15.07.2025 @ 22:10
Script: /usercp.php?action=buddy&add=3&sid=d47c68a9c581aa0edcfac3eb99fc8c67
Referer: