SpambotUserSpamPageController.php

<?php

namespace Drupal\spambot\Controller;

use Drupal\Core\Controller\ControllerBase;
use Drupal\user\UserInterface;

/**
 * Returns a render-able array for a spam page.
 */
class SpambotUserSpamPageController extends ControllerBase {
    
    /**
     * Returns a render-able array for a spam page.
     *
     * @param \Drupal\user\UserInterface $user
     *   The user who can be reported.
     *
     * @return array
     *   Return form.
     */
    public function spambotUserSpam(UserInterface $user) {
        $myForm = $this->formBuilder()
            ->getForm('Drupal\\spambot\\Form\\SpambotUserspamForm', $user);
        $renderer = \Drupal::service('renderer');
        $myFormHtml = $renderer->render($myForm);
        return [
            '#markup' => $myFormHtml,
        ];
    }

}