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 '/srv/.mysql/mysql.sock' (111)
mysql error number: 2002
mysql version: unknown
php version: 5.6.19
Date: 10.05.2024 @ 09:55
Script: /register.php?sid=3f06fdb9aaebf10adfeea0b86ecf6587
Referer: