Rails with Devise, omniauth-google-oauth2 and omniauth-linkedin-oauth2 Authentication failed

Question

I am using omniauth-oauth2,omniauth-google-oauth2,omniauth-linkedin-oauth2,omniauth-facebook,omniauth-twitter gems for Authentication of my basic rails app hosted in aws ec2.Facebook and Twitter Authentication is working fine but while Authentication with Linkedin and google+ are rendering the message "Not found. Authentication passthru." Facebook and Twitter are working fine.please help me with the problem .Any help is highly Appreciated.

Thanks in Advance.

Gemfile

ruby '2.3.1'
gem 'devise', '~> 4.2'
gem 'koala', '~> 2.4'
gem 'linkedin', '~> 1.1'
gem 'omniauth-oauth2', '~> 1.4'
gem 'omniauth-facebook'
gem 'omniauth-google-oauth2'
gem 'omniauth-twitter'
gem 'omniauth-linkedin-oauth2', '~> 0.1.5'

devise.rb

config.omniauth :facebook, "356781xxxxx", "1686997c451aecfd12dc7bxxxxxx",
                scope: 'email', info_fields: 'email',
                callback_url: "http://ec2-xx-xxx-xx-xx.us-west-   2.compute.amazonaws.com/users/auth/facebook/callback"
config.omniauth :twitter, "HnA4m6IzaZ1haT9nxxxxxxx", "SsL6TiWFLkKDWnta5zRek7YBvwfPBfMEiNYWRVxxxxxxxxxxx",
                callback_url: "http://ec2-xx-xxx-xx-xx.us-west-  2.compute.amazonaws.com/users/auth/twitter/callback"
config.omniauth :google_oauth2,"115059498414-  5fj2in117vueg4a1tdg52xxxxxxxxx.apps.googleusercontent.com","
                ZbPzUjSKpYRTmxxxxxxx",
                {
                  :name => "google",
                  :scope => "email, profile, plus.me",
                  :prompt => "select_account",
                  :image_aspect_ratio => "square",
                  :info_fields => "id,name,link",
                  :image_size => 50
                }
require "omniauth-linkedin-oauth2"
config.omniauth :linkedin, "811sfhxxxxxx","Pe2wtfRbxxxxx",:scope => 'r_fullprofile r_emailaddress'

users/omniauth_callbacks_controller.rb

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
   skip_before_action :verify_authenticity_token

   def sign_in_with(provider_name)
     @user = User.from_omniauth(request.env["omniauth.auth"])
     sign_in_and_redirect @user, :event => :authentication
     set_flash_message(:notice, :success, :kind => provider_name) if is_navigational_format?
   end

   def facebook
     sign_in_with "Facebook"
   end

   def linkedin
     sign_in_with "LinkedIn"
   end

   def twitter
     sign_in_with "Twitter"
   end

   def google_oauth2
     sign_in_with "Google"
   end

   def developer
     sign_in_with "Developer"
   end
end

user.rb

class User < ActiveRecord::Base
  devise :rememberable, :trackable, :omniauthable,
         :omniauth_providers => [:twitter,:facebook,
                                 :linkedin_oauth2, :google_oauth2,
                                 *(:developer if Rails.env.development?)]

  def self.from_omniauth(auth)
    where(provider: auth.provider, uid: auth.uid).first_or_create do |user|
      user.email = auth.info.email
    end
  end
end

routes.rb

Rails.application.routes.draw do
  devise_for :users, :controllers => {
  :omniauth_callbacks => "users/omniauth_callbacks"
   }
  devise_scope :user do
    get 'sign_in', :to => 'devise/sessions#new', :as => :new_user_session
    delete 'sign_out', :to => 'devise/sessions#destroy', :as => :destroy_user_session
  end

  root 'home#index'
end

callback URL to my app site in google developer account:

   Authorized JavaScript origins : http://ec2-xx-xxx-xx-xx.us-west
   Authorized redirect URIs : ec2-xx-xxx-xx-xx.us-west/users/auth/google/callback

also tried with

   ec2-xx-xxx-xx-xx.us-west/users/auth/google_oauth2/callback

callback URL to my app site in linkedin developer account:

      OAuth 2.0 Authorized Redirect URLs:
      ec2-xx-xxx-xx-xx.us-west/users/auth/linkedin/callback
      ec2-xx-xxx-xx-xx.us-west/users/auth/linkedin_oauth2/callback

even tried with OAuth 1.0a Default "Accept" Redirect URL:

   ec2-xx-xxx-xx-xx.us-west-/users/auth/linkedin/callback