The fb access token always get expired in ember app

I am using ember-simple-auth and ember-cli-facebook-js-sdk.I am using the ember-cli-facebook-sdk because I want to get the user photo anytime as facebook only give the access which expires in 60 mins.So I can't save also.Ember-cli-facebook-sdk is working fine.But sometimes I am getting an error in my network console.

{"error":{"message":"An active access token must be used to query information about the current user.","type":"OAuthException"}

I am not able to think why this error is coming.I have a initializer which have facebook id and api version.And Now I am using Fb.api and others in my controller,component and other.But it fails sometimes.Please anwser where I am going wrong.Thanks in advance.