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: 08.06.2024 @ 20:30
Script: /wbb2/profile.php?%3Fsid=74db930c71fddcbe563093ef5671019d
Referer: http://www.friendsbistro.de/wbb2/profile.php?%3Fsid=74db930c71fddcbe563093ef5671019d