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: 15.05.2024 @ 01:16
Script: /wbb2/jgs_portal.php?sid=eed424ce1b71716ad5bb7d86488e35a1
Referer: http://www.friendsbistro.de/wbb2/jgs_portal.php?sid=eed424ce1b71716ad5bb7d86488e35a1