title: Unable to find template in Symfony 3
body: <p>I know that there are a lot of subject like that however I didn't find the solution </p>
  
  <p>I have this issue </p>
  
  <blockquote>
    <p>Unable to find template "CoreBundle:index.html.twig" (looked into: /var/www/html/MyProject/vendor/symfony/symfony/src/Symfony/Bridge/Twig/Resources/views/Form).</p>
  </blockquote>
  
  <p>This is the architecture 
  <a href="https://i.stack.imgur.com/HvRcQ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/HvRcQ.png" alt="enter image description here"></a>
  This is my controller </p>
  
  <pre><code>&lt;?php
  
  namespace CoreBundle\Controller;
  
  use Symfony\Bundle\FrameworkBundle\Controller\Controller;
  use Symfony\Component\HttpFoundation\Request;
  use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
  
  class DefaultController extends Controller
  {
      /**
       * @Route("/", name="index")
       */
      public function indexAction(Request $request)
      {
          return $this-&gt;render('CoreBundle:index.html.twig');
      }
  
      /**
       * @Route("/ma-personnalite", name="ma-personnalite")
       */
      public function mapersonnaliteAction(Request $request)
      {
          return $this-&gt;render('CoreBundle:ma_personnalite.html.twig');
      }
  
      /**
       * @Route("/cv", name="cv")
       */
      public function cvAction(Request $request)
      {
          return $this-&gt;render('CoreBundle:cv.html.twig');
      }
  
      /**
       * @Route("/scolaires", name="scolaires")
       */
      public function scolairesAction(Request $request)
      {
          return $this-&gt;render('CoreBundle:scolaires.html.twig');
      }
  
      /**
       * @Route("/extra-scolaires", name="extra-scolaires")
       */
      public function extrascolairesAction(Request $request)
      {
          return $this-&gt;render('CoreBundle:extra_scolaires.html.twig');
      }
  
      /**
       * @Route("/contact", name="contact")
       */
      public function contactAction(Request $request)
      {
          return $this-&gt;render('CoreBundle:contact.html.twig');
      }
  }
  </code></pre>
  
  <p>This is the config.yml</p>
  
  <pre><code>#app/config/routing.yml
  core:
      resource: "@CoreBundle/Controller/"
      type:     annotation
      prefix:   /
  </code></pre>
  
  <p>Thanks for your time</p>