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 @ 11:10
Script: /wbb2/profile.php?userid=7589&sid=6a9d6be7e00d546bec7bce2601f6f5d9
Referer: http://www.friendsbistro.de/wbb2/profile.php?userid=7589&sid=6a9d6be7e00d546bec7bce2601f6f5d9