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 @ 01:07
Script: /usercp.php?action=addsubscription&threadid=4917&sid=4759cf9812bdb555b4e2b5281c6883a1
Referer: