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: 5.6.40-65+0~20230214.72+debian11~1.gbp473a1b
Date: 03.06.2023 @ 03:18
Script: /main/misc.php?action=faq&sid=aa859dfb749fa4da1b5890aabaeec9cd
Referer: