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: 19.04.2024 @ 10:33
Script: /main/jgs_galerie_ecard.php?action=senden&bildid=55&page=14&bilduserid=459&sid=65a08778ddcb3683e5795a7b7a30a2fe
Referer: