SQL-DATABASE ERROR

Database error in (): Link-ID == false, connect failed
mysql error:
mysql error number:
mysql version: unknown
php version: 7.4.33
Date: 19.05.2024 @ 21:49
Script: /wbb2/login.php?sid=acd02ae169412881ce5d11f76ee2c3e6
Referer: http://friendsbistro.de/wbb2/login.php?sid=acd02ae169412881ce5d11f76ee2c3e6