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: 22.05.2024 @ 13:48
Script: /wbb2/misc.php?action=datenschutz&sid=56dc61ee3f75f6f0ec4ab133f53a5ac4
Referer: http://www.friendsbistro.de/wbb2/misc.php?action=datenschutz&sid=56dc61ee3f75f6f0ec4ab133f53a5ac4