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  1. POOmniauth-facebook keeps reporting invalid_credentials
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    <p>I am trying to implement omniauth-facebook as described in Railscast #360 and have run into quite a roadblock. When I click on the signin link, I get the desired popup asking me to input my facebook credentials, but when I submit, I get an OmniAuth::Strategies::OAuth2::CallbackError error. In the apache logs, this is printed: (facebook) Authentication failure! invalid_credentials: OmniAuth::Strategies::OAuth2::CallbackError, OmniAuth::Strategies::OAuth2::CallbackError</p> <p>here is the relevant code:</p> <p><strong>omniauth.rb</strong></p> <pre><code>OmniAuth.config.logger = Rails.logger Rails.application.config.middleware.use OmniAuth::Builder do provider :facebook, ENV['FACEBOOK_APP_ID'], ENV['FACEBOOK_SECRET'] end </code></pre> <p><strong>sessions_controller.rb</strong></p> <pre><code>class SessionsController &lt; ApplicationController def create user = User.from_omniauth(env["omniauth.auth"]) session[:user_id] = user.id redirect_to root_url end def destroy session[:user_id] = nil redirect_to root_url end end </code></pre> <p><strong>application.html.erb</strong></p> <pre><code>&lt;div id="fb-root"&gt;&lt;/div&gt; &lt;script&gt; window.fbAsyncInit = function() { FB.init({ appId : '(**my app id**)', // App ID status : true, // check login status cookie : true // enable cookies to allow the server to access the session }); $('#sign_in').click(function(e) { e.preventDefault(); return FB.login(function(response) { if (response.authResponse) { return window.location = '/auth/facebook/callback'; } }); }); return $('#sign_out').click(function(e) { FB.getLoginStatus(function(response) { if (response.authResponse) { return FB.logout(); } }); return true; }); }; &lt;/script&gt; </code></pre> <p>Am I missing something simple? I've been searching for a solution for the last few days.</p>
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