Fatal error: Uncaught Symfony\Component\Debug\Exception\ClassNotFoundException: Attempted to load class "NotFoundHttpException" from namespace "AppBundle\Controller". Did you forget a "use" statement for "Symfony\Component\HttpKernel\Exception\NotFoundHttpException"? in /site_albert/src/AppBundle/Controller/DefaultController.php:77 Stack trace: #0 [internal function]: AppBundle\Controller\DefaultController->indexAction(Object(Symfony\Component\HttpFoundation\Request), '4') #1 /site_albert/var/cache/prod/classes.php(4651): call_user_func_array(Array, Array) #2 /site_albert/var/cache/prod/classes.php(4606): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1) #3 /site_albert/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php(168): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #4 /site_albert/web/app.php(16): Symfony\Component\HttpKernel\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request in /site_albert/app/Resources/TwigBundle/views/Exception/error500.html.twig on line 1