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 @ 19:03
Script: /main/jgs_db.php?action=show&eintrags_id=3&katid=8&sid=64f02f86b2fc141b7c2d6e4487628115
Referer: