- Проверяем виджеты

common/modules/school/views/course/index.php

@@ -95,7 +95,7 @@ WidgetAssetBundle::register($this);
 </section>
 
 <div class="white-popup-block mfp-hide">
-    <?php echo RegistrationWidget::widget(); ?>
+    <?php RegistrationWidget::widget(); ?>
     <?php //LoginWidget::widget(); ?>
 </div>
 

common/modules/users/widgets/RegistrationWidget.php

@@ -22,6 +22,6 @@ class RegistrationWidget extends Widget
 	{
         $modelUser = new User();                
         $formPopup = new \common\components\BaseForm('/common/modules/users/forms/RegistrationUserPopupForm', $modelUser);
-		return $this->render('RegistrationWidget', ['formPopup' => $formPopup->out]);
+		echo $this->render('RegistrationWidget', ['formPopup' => $formPopup->out]);
 	}
 }
\ No newline at end of file