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 @ 23:05
Script: /main/jgs_galerie_kategorie.php?kategorie=8&sid=a2e17df37c693f9312facc20bba4cf28
Referer: