title: Android Facebook Login error - CONNECTION_FAILURE: TigonError
body: <p>I am getting Facebook login error on some devices. I have already integrated Facebook login and logging-in  successfully in many devices.
  The faceboook SDK is <code>compile 'com.facebook.android:facebook-android-sdk:4.0.0'</code>.
  Error Screen-<a href="https://i.stack.imgur.com/hPUVa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hPUVa.png" alt="facebook login"></a></p>