I have integrated deeplinking using branch.io in my angular app.Links are getting generated but for Facebook the content is not getting posted [ showing an error : " Failed to load resource: 'https://www.facebook.com/v2.3/dialog/share/submit?dpr=1' the server responded with a status of 500 ()"] and for Google Plus , the rich content is not displaying.But it's working fine for Twitter and Email.
What might be the problem?