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: 23.07.2024 @ 14:13
Script: /wbb2/board.php?boardid=111%3Fsid%3Dcb7609c84102b8828f45b28b0c8242b3
Referer: