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 @ 00:37
Script: /main/thread.php?threadid=935&goto=lastpost&sid=f21043d4dde2b006b890aca9d2cb28eb
Referer: