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: 02.06.2024 @ 02:06
Script: /calendar.php?sid=d7ee43b5d2d4b594e4403615b57099ee
Referer: