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: 29.03.2024 @ 00:21
Script: /main/board.php?boardid=18&page=1&daysprune=1000&sortfield=vote&sortorder=ASC&sid=bc7bb71a67ffb8d672acab0d4402f2b8
Referer: