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: 25.04.2024 @ 00:01
Script: /main/jgs_galerie_userbilder.php?userid=642&bildid=256&sid=401c49278aa31f2f4b95794408a97a40
Referer: