you go to settings--->privacy---->Facebook.
There you allow your app the access..
Clean your project and run it.your problem will get solved.If not feel free to ask me.
Enjoy..
Domanda
How can I rectify this? Basically what I did was I went to my Facebook settings and removed the app from there. Many users do this to remove access of the app.
When I come back to the app it should put me back into the usual sign up flow and go through the Facebook approval process again.
However when I did that here are the errors I see. I am no longer able to use the app because of these errors.
Soluzione
you go to settings--->privacy---->Facebook.
There you allow your app the access..
Clean your project and run it.your problem will get solved.If not feel free to ask me.
Enjoy..