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: 16.04.2024 @ 22:54
Script: /main/board.php?boardid=21&page=1&daysprune=1000&sortfield=starter&sortorder=ASC&sid=74cd643f7216a4b0e9b13006c934210d
Referer: