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: 19.07.2025 @ 01:21
Script: /register.php?sid=b604c38f688b8511ae8f94adf2bbe870
Referer: