SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error: Access denied for user 'web6'@'localhost' (using password: YES)
mysql error number: 1045
mysql version: unknown
php version: 5.6.40-68+0~20230902.80+debian11~1.gbpa2012b
Date: 28.03.2024 @ 22:09
Script: /main/board.php?boardid=59&page=1&daysprune=1000&sortfield=topic&sortorder=ASC&sid=349073afe6d847c89fc63d8b2bcb7e5b
Referer: