SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Access denied for user '20050921004-1'@'134.0.30.198' (using password: YES)
mysql error number: 1045
Date: 25.11.2017 @ 06:40
Script: /board/wbblite/index.php
Referer: