title: OAuth2::Error , Sign in issue with Oauth-facebook
body: <p><strong>This is the error I am getting once I click on sign up and authorize the app with Facebook.</strong></p>
  
  <pre><code>: {"error":{"message":"Error validating application. Invalid application     ID.","type":"OAuthException","code":101}}
  </code></pre>
  
  <p>I don't know how to fix this and where the error is coming from. Here is my omniauth.rb</p>
  
  <pre><code>Rails.application.config.middleware.use OmniAuth::Builder do
    provider :developer unless Rails.env.production?
    provider :facebook, ['I_PUT_MY_API_ID_KEY'], ['I_PUT_MY_API_SECRET_KEY'],
    :scope =&gt; 'email, user_relationships, user_status,user_about_me publish_actions',    :display =&gt; 'popup'
  end
  </code></pre>