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 @ 23:30
Script: /main/board.php?boardid=59&page=1&daysprune=1000&sortfield=starter&sortorder=ASC&sid=9a5b7a0ff4c225dc2c5c67a54e3b0489
Referer: