SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error:
mysql error number:
mysql version: unknown
php version: 7.4.33
Date: 29.04.2024 @ 06:26
Script: /Forum/usercp.php?action=buddy&add=7397&sid=59ea97990d9f74b7d3f2a3d80cfb50ca
Referer: