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: 08.07.2025 @ 11:20
Script: /login.php?sid=1ffc7bafc5e21be4664522576b09104f
Referer: