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: 17.04.2024 @ 00:20
Script: /main/board.php?boardid=37&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=c05475de4ecd86e9d5afd83b91d9620e
Referer: