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 @ 13:03
Script: /main/jgs_galerie_userbilder.php?kategorie=6&bildid=252&sid=dd943d1e865fa2e89033f9d93e1d0b6e
Referer: