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: 23.04.2024 @ 19:01
Script: /main/jgs_portal_links.php?kat_id=3&sid=aab9b3d71178849f4ed5184966d2f8e0
Referer: