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: 13.05.2024 @ 12:58
Script: /wbb2/search.php?sid=0b308e311d461c8fad0ec108c815e4ba
Referer: http://friendsbistro.de/wbb2/search.php?sid=0b308e311d461c8fad0ec108c815e4ba