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 @ 23:35
Script: /wbb2/board.php?boardid=111%3Fsid%3D7aae8d8789a4c386d1e680c5473b573a
Referer: