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 @ 13:34
Script: /main/jgs_galerie_userbilder.php?kategorie=4&bildid=138&page=1&sid=f15abb9a0a9c4c573f6e142e07f8afe2
Referer: