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: 18.04.2024 @ 13:01
Script: /main/jgs_galerie_userbilder.php?kategorie=8&bildid=247&sid=1e8d8a1f4abb8400197b93f479c0362d
Referer: