SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Access denied for user 'HTO01FLBUQTS'@'c4aweb29.aul.t-online.de' (using password: YES)
mysql error number: 1045
Date: 22.08.2018 @ 06:14
Script: /wbblite/thread.php?goto=lastpost&threadid=724&sid=1efc43be62555eeafcd9a22ff4f5da55
Referer: