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 @ 13:45
Script: /main/jgs_galerie_userbilder.php?kategorie=2&bildid=55&sid=79e9ed5e68f3b873c4bc27e88d97355b&page=15
Referer: