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: 29.03.2024 @ 00:05
Script: /main/jgs_galerie_userbilder.php?userid=1&bildid=248&sid=1b407f64b84bd6863dd7570c28d06f27
Referer: