SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error:
mysql error number: 0
mysql version: unknown
php version: 7.3.33
Date: 20.04.2024 @ 08:40
Script: /wbb/login.php?sid=40c22570fdd827b2af8713a0872a6381
Referer: