FileUpload: génère une erreur correcte si le token CSRF n'est pas bon.

Controller/UploadController.php

@@ -16,6 +16,7 @@ use Symfony\Component\Form\Extension\Csrf\CsrfProvider\CsrfProviderInterface;
 use Symfony\Component\HttpFoundation\JsonResponse;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Exception\HttpException;
 use Symfony\Component\Routing\RouterInterface;
 
 /**
@@ -115,12 +116,12 @@ class UploadController extends Controller
     /**
      *
      * @param Request $request
-     * @throws JsonReponse
+     * @throws HttpException
      */
     protected function validateToken(Request $request)
     {
         if(!$this->csrfProvider->isCsrfTokenValid("file-upload", $request->query->get('token', null))) {
-            throw $this->createResponse(Response::HTTP_BAD_REQUEST, 'Invalid CRSF token');
+            throw new HttpException(Response::HTTP_FORBIDDEN, 'Invalid token');
         }
     }