Issue cover_photo when creating a test page

Source: https://stackoverflow.com/questions/52328945/facebook-graph-api-issue-cover-photo-when-creating-a-test-page

Thank to the Facebook Developer Community.

So the cover_photo, instead of being a url, must be an object with a url field and the url as value.

As an example in the Graph API Explorer:

name: cover_photo

value: {"url": "https://path.to/image.png"}




'cover_photo' => "https://hkinstant.me/img/cover.jpg"
cover_photo param is not expected to be an URL but rather an OBJECT

see here:
https://developers.facebook.com/docs/graph-api/reference/user/accounts/#Creating