SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Access denied for user 'fh_livingmyth'@'mis35.de' (using password: YES)
mysql error number: 1045
Date: 20.09.2018 @ 18:57
Script: /board.php?boardid=85&sid=2e246784d275e1835bf111391e135e1b
Referer: