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: 20.04.2024 @ 07:01
Script: /main/usercp.php?action=addsubscription&boardid=70&sid=1055a228d4155520c491535c3b4e449c
Referer: