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: 29.03.2024 @ 07:41
Script: /main/thread.php?goto=nextnewest&threadid=1339&sid=610e9c26c37c0516a2e48e324de07bbf
Referer: