SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error:
mysql error number:
mysql version: unknown
php version: 7.2.34-nmm9
Date: 22.05.2024 @ 11:45
Script: /wbb2/search.php?action=user&userid=302&sid=526ba712bfdd663d187e5ba49aa9e9cd
Referer: