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 @ 13:57
Script: /wbb2/index.php/banner/banner/images/icons/board.php?boardid=111%3Fsid%3D50e3674cbee8915fbb9cd2f79cbafb3c
Referer: