I need develop Facebook Instant Articles Integration for self-written CMS(written with php 5.6 using Facebook php SDK). It will be posting articles automatically when publish on site by editor; I am created a test application and test page for posting ans pass their APP_ID, APP_SECRET, PAGE_ID to api method arguments. When I tried push to FB some example article, i got an error:
Facebook\Exceptions\FacebookResponseException] exception
'Facebook\Exceptions\FacebookAuthorizationException' with message
'(#200) Requires pages_manage_instant_articles permission to manage the object'
How i can debug my integration(with publishing articles into some sandbox and watching them in Facebook admin panel) without checking my application and page?