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 @ 11:09
Script: /register.php?sid=b8d9c8503cbb3ee9231d8f2e9ad733b9
Referer: