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: 14.05.2024 @ 14:20
Script: /wbb2/jgs_portal.php?sid=909ee834385257fbde8e18dd2b292548
Referer: http://www.friendsbistro.de/wbb2/jgs_portal.php?sid=909ee834385257fbde8e18dd2b292548