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: 26.04.2024 @ 17:33
Script: /main/jgs_galerie_kategorie.php?kategorie=3&page=1&sid=bfbd292827233a30b69f5f3ecdabe4fb
Referer: