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 @ 19:14
Script: /wbb2/profile.php?userid=250&sid=3a863d7824a87f7eb2a50ba4add1d556
Referer: http://www.friendsbistro.de/wbb2/profile.php?userid=250&sid=3a863d7824a87f7eb2a50ba4add1d556