Render form in Drupal 8. **In modulename.routing.yml** modulename.fp: path: '/formpage' defaults: _controller: '\Drupal\modulename\Controller\*Controller::formpage' **Write code in controller.php** public function formpage() { $form = ''; $form = 'Form Title'; $form .= \Drupal::formBuilder()->getForm('\Drupal\modulename\Form\fp'); return [ '#type' => 'markup', '#markup' => $form, ]; } and write form code in modules\modulename\src\Form\fp.php. but showing **Form Title** Array how to render form.