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: 19.06.2018 @ 12:43
Script: /wbblite/thread.php?goto=lastpost&threadid=694&sid=905c0c551225d74652a899b7b4f107cf
Referer: