I'm getting user's profile picture in this way: https://graph.facebook.com/USER_ID/picture and everything was fine until today. Today i lunched my app and i started getting default profile pictures instead of real one.
It seems that now i need access token.
not working
https://graph.facebook.com/USER_ID/picture
working
https://graph.facebook.com/USER_ID/picture?access_token=ACCESS_TOKEN
Question
What happened? I haven't changed anything in the code or configuration of the fb app and yesterday everything was working like a charm.
Important to know: My app is in development mode