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: 19.04.2024 @ 13:50
Script: /main/jgs_db.php?action=show&eintrags_id=1&katid=7&sid=dd2299e8cd89fa9981098fff15b0e8bd
Referer: