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: 06.07.2025 @ 00:08
Script: /index.php?sid=8fdbe0b3beedc1dcde11cf1c6f2f66f2
Referer: