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 @ 23:42
Script: /board.php?boardid=39&sid=0311e6aee14c8575c0817ddd4f4a727a
Referer: