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: 21.01.2025 @ 23:06
Script: /profile.php?userid=637&sid=75dc81fb601f7ab2f0658b29895d8ba6
Referer: