SQL-DATABASE ERROR

Database error in (): Link-ID == false, connect failed
mysql error:
mysql error number:
mysql version: unknown
php version: 7.4.33-nmm5
Date: 03.07.2024 @ 00:41
Script: /wbb2/board.php?boardid=111%3Fsid%3D24254d45a16eb9786c811505f6c81af6
Referer: