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: 28.06.2024 @ 13:05
Script: /wbb2/index.php/banner/js/banner/board.php?boardid=111%3Fsid%3D55b9c0e2b50192b2021a40f2842a84e9
Referer: