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: 16.07.2018 @ 10:45
Script: /board/wbblite/index.php
Referer: