title: Yii 2 Namespace missing?
body: <p>I have a namespace missing problem in Yii 2. I installed the advanced application. I am referencing a backend model from my frontend controller. Below is a code snippet of my backend model, frontend controller and error message.</p>
  
  <p><strong>Error</strong></p>
  
  <blockquote>
    <p>Unable to find 'backend\models\PaymentsMethod\TermsAndConditions' in file: C:\inetpub\wwwroot\jobmanager/backend/models/PaymentsMethod/TermsAndConditions.php. Namespace missing?</p>
  </blockquote>
  
  <p><strong>Backend Model</strong></p>
  
  <pre><code>namespace app\models\PaymentsMethod;
  use Yii;
  
  class TermsAndConditions extends \yii\db\ActiveRecord
  {
  </code></pre>
  
  <p><strong>Frontend Model</strong></p>
  
  <pre><code>public function actionCreate()
  {
      $model = new estimate();
      $tnc   = new \backend\models\PaymentsMethod\TermsAndConditions();
  </code></pre>