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: 11.07.2025 @ 13:36
Script: /usercp.php?action=buddy&add=881&sid=939b4d08a2be2cce73fe593ae6442ffe
Referer: