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 @ 18:57
Script: /main/jgs_galerie_ecard.php?action=senden&bildid=46&page=12&bilduserid=459&sid=b41870d969254c57da70d66b93aa9d11
Referer: