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: 13.07.2025 @ 10:18
Script: /usercp.php?action=buddy&add=933&sid=7d101a59ca6cc33e0b9dce089f2ed0d7
Referer: