php - drupal 8 error to render template twig with controller -

i trying render template controller not work show me error :

logicexception: controller must return response (

hello bob!

given). in symfony\component\httpkernel\httpkernel->handleraw() (line 163 of core/vendor/symfony/http-kernel/symfony/component/httpkernel/httpkernel.php).

my function :

public function helloaction($name) { $twigfilepath = drupal_get_path('module', 'acme') . '/templates/hello.html.twig'; $template = $this->twig->loadtemplate($twigfilepath); return $template->render(array('name' => $name)); } 

in drupal 8 either return response object or render array controller. have 2 options:

1) place rendered template response object:

public function helloaction($name) {   $twigfilepath = drupal_get_path('module', 'acme') . '/templates/hello.html.twig';   $template = $this->twig->loadtemplate($twigfilepath);   $markup = $template->render(array('name' => $name));   return new response($markup); } 

2) place rendered template render array:

public function helloaction($name) {   $twigfilepath = drupal_get_path('module', 'acme') . '/templates/hello.html.twig';   $template = $this->twig->loadtemplate($twigfilepath);   $markup = $template->render(array('name' => $name));   return array(     '#markup' => $markup,   ); }