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: 18.05.2024 @ 00:17
Script: /calendar.php?sid=b7fc7d6e4439a3fa462c9a4ed3a8b892
Referer: