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: 01.06.2024 @ 07:00
Script: /wbb2/board.php?boardid=111%3Fsid%3D2f88a47e27341e227c9cb99dad585015
Referer: http://www.friendsbistro.de/wbb2/board.php?boardid=111%3Fsid%3D2f88a47e27341e227c9cb99dad585015