Is there a way to test an app implemented Facebook Graph API required Page Public Content Access permission?
I was testing the {page_id}_{post_id} endpoint in Facebook Graph API Explorer to get a post, but got the error message:
This endpoint requires the 'pages_read_engagement' permission or the 'Page Public Content Access' feature. Refer to https://developers.facebook.com/docs/apps/review/login-permissions#manage-pages and https://developers.facebook.com/docs/apps/review/feature#reference-PAGES_ACCESS for details.
This error applies to both random pages and pages that I own. I couldn't use it at all. The app I've planned to do is mostly based on Facebook posts so I may say this is it's the main function, so I just can't have the app reviewed until I can test this endpoint successfully.
What can I do to make it work? Any help would be appreciated!
It turns out I chose the wrong type to create my facebook app. I chose to create a "Business Connected Experiences" app instead of a "Manage Business Integrations" one, so I couldn't fully access to the permissions I need to query on my own page. The former only doesn't provide me the pages_user_read_content and the likes, so it was unable for me to read comments from posts. Besides, I also use an user token instead of a page token (Thanks Lars for pointing this out for me).
So, I just create a new app with the right type and everything turns out well.
Hope this will help someone someday.