Facebook login not working after download from play store

Facebook login working fine in development mode and no error getting from FB return. But it happened a big problem when I will try to login with facebook after downloaded from the play store. It getting still error.
Login Error: there is an error in logging you into this application. Please try again later.

In my case, after publish in google play, the hash key from facebook has been switched automatic , so i changed hash key for production.

hi, I also face this problem. How to change hash key for production? Create a new hash key?