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: 11.05.2024 @ 08:09
Script: /register.php?sid=3f5cbdd1ada9b05ff8b2e0d72f8eba51
Referer: