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: 18.04.2024 @ 04:04
Script: /main/board.php?boardid=75&daysprune=1000&sortfield=lastposttime&sortorder=ASC&sid=1f86041ca6dd98fcc35b4a13c6ac1170
Referer: