SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error: Access denied for user 'plauderoase_de'@'10.27.11.20' (using password: YES)
mysql error number: 1045
mysql version: unknown
php version: 5.6.31
Date: 17.02.2018 @ 21:09
Script: /board/jgs_portal.php
Referer: