Devise token auth not returning the access token and client

here is the reference to stackoverflow

I am not able to receive the access token and client in auth/sign_in api given by devise_token_auth gem

My app was working properly before integrating the omniauth gem. The issue started coming after integrating the omniauth gem.

session_store.rb

Rails.application.config.session_store :active_record_store, key: '_my-app_session'

Application controller.rb

class ApplicationController < ActionController::Base   include DeviseTokenAuth::Concerns::SetUserByToken   layout false   before_filter :configure_permitted_parameters, if: :devise_controller?   before_filter :load_client   protect_from_forgery with: :null_session, if: Proc.new { |c| c.request.format == 'application/json' }   skip_before_filter :verify_authenticity_token, :if => Proc.new { |c| c.request.format == 'application/json' }   helper_method :current_user

devise_token_auth version 0.1.30 rails version 4.1.8