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: 17.05.2024 @ 14:58
Script: /wbb2/hmportal.php?sid=ab7308af9de43fb4004d85a760d39e61
Referer: http://www.friendsbistro.de/wbb2/hmportal.php?sid=ab7308af9de43fb4004d85a760d39e61