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: 24.09.2018 @ 02:52
Script: /wbblite/memberslist.php?sid=4b0c60b3962ebd707fa60faafa284c03
Referer: