title: Laravel Socialite "Facebook" The parameter app_id is required
body: <p>So I am having the same problem as this user here : <a href="https://stackoverflow.com/questions/47363067/laravel-socialite-facebook-login-error-the-parameter-app-id-is-required">Laravel Socialite Facebook Login Error: The parameter app_id is required</a></p>
  
  <p>and I have followed the solution give to this user. but I still get the same error.
  even tried changing clinet_id to app_id.. nothing has changed the same error</p>
  
  <blockquote>
    <p>The parameter app_id is required</p>
  </blockquote>
  
  <pre><code> 'facebook' =&gt; [
          'client_id' =&gt; 'hidden', //Facebook App Client ID
          'client_secret' =&gt; 'hidden', // Your Facebook App Client Secret
          'redirect' =&gt; 'http://localhost:8000/login/facebook/callback', // Your application route used to redirect users back to your app after authentication
      ],
  </code></pre>
  
  <p>route:</p>
  
  <pre><code>Route::get('login/facebook', 'Auth\LoginController@redirectToProvider');
  Route::get('login/facebook/callback', 'Auth\LoginController@handleProviderCallback');
  </code></pre>
  
  <p>I cant see whats wrong here. added everything. from the documentation. in service the facade. what can be my mistake here? I feel its fairly obvious but I cant see it</p>