Symfony4 - Error while visting /register page

Question

I am using FOSUserBundle with Symfony4. When trying to visit /register url, I am getting this error message:

Attempted to load class "User" from namespace "AppBundle\Entity".
Did you forget a "use" statement for e.g. "Symfony\Component\Security\Core\User\User", "Symfony\Bridge\Doctrine\Tests\Fixtures\User" or "FOS\UserBundle\Model\User"?

Another SO user posted this question, but the suggested answer still not working in my case.

Here is the code for User.php class.

namespace AppBundle\Entity;

use FOS\UserBundle\Model\User as BaseUser;
use Doctrine\ORM\Mapping as ORM;


/**
 * @ORM\Entity
 * @ORM\Table(name="fos_user")
 */
class User extends BaseUser
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    public function __construct()
    {
        parent::__construct();
        // your own logic
    }
}

And here for config/packages/fos_user.yaml

fos_user:
    db_driver: orm
    firewall_name: main
    user_class: AppBundle\Entity\User

Here is the RegistrationController code related to register action. (note: this is auto-generate code, I have not changed anything)

/*
 * This file is part of the FOSUserBundle package.
 *
 * (c) FriendsOfSymfony <http://friendsofsymfony.github.com/>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace FOS\UserBundle\Controller;

use FOS\UserBundle\Event\FilterUserResponseEvent;
use FOS\UserBundle\Event\FormEvent;
use FOS\UserBundle\Event\GetResponseUserEvent;
use FOS\UserBundle\Form\Factory\FactoryInterface;
use FOS\UserBundle\FOSUserEvents;
use FOS\UserBundle\Model\UserInterface;
use FOS\UserBundle\Model\UserManagerInterface;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\Session\SessionInterface;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
use Symfony\Component\Security\Core\Exception\AccessDeniedException;

/**
 * Controller managing the registration.
 *
 * @author Thibault Duplessis <thibault.duplessis@gmail.com>
 * @author Christophe Coevoet <stof@notk.org>
 */
class RegistrationController extends Controller
{
    private $eventDispatcher;
    private $formFactory;
    private $userManager;
    private $tokenStorage;

    public function __construct(EventDispatcherInterface $eventDispatcher, FactoryInterface $formFactory, UserManagerInterface $userManager, TokenStorageInterface $tokenStorage)
    {
        $this->eventDispatcher = $eventDispatcher;
        $this->formFactory = $formFactory;
        $this->userManager = $userManager;
        $this->tokenStorage = $tokenStorage;
    }

    /**
     * @param Request $request
     *
     * @return Response
     */
    public function registerAction(Request $request)
    {
        $user = $this->userManager->createUser();
        $user->setEnabled(true);

        $event = new GetResponseUserEvent($user, $request);
        $this->eventDispatcher->dispatch(FOSUserEvents::REGISTRATION_INITIALIZE, $event);

        if (null !== $event->getResponse()) {
            return $event->getResponse();
        }

        $form = $this->formFactory->createForm();
        $form->setData($user);

        $form->handleRequest($request);

        if ($form->isSubmitted()) {
            if ($form->isValid()) {
                $event = new FormEvent($form, $request);
                $this->eventDispatcher->dispatch(FOSUserEvents::REGISTRATION_SUCCESS, $event);

                $this->userManager->updateUser($user);

                if (null === $response = $event->getResponse()) {
                    $url = $this->generateUrl('fos_user_registration_confirmed');
                    $response = new RedirectResponse($url);
                }

                $this->eventDispatcher->dispatch(FOSUserEvents::REGISTRATION_COMPLETED, new FilterUserResponseEvent($user, $request, $response));

                return $response;
            }

            $event = new FormEvent($form, $request);
            $this->eventDispatcher->dispatch(FOSUserEvents::REGISTRATION_FAILURE, $event);

            if (null !== $response = $event->getResponse()) {
                return $response;
            }
        }

        return $this->render('@FOSUser/Registration/register.html.twig', array(
            'form' => $form->createView(),
        ));
    }
}

And Stack Trace:

Symfony\Component\Debug\Exception\ClassNotFoundException:
Attempted to load class "User" from namespace "AppBundle\Entity".
Did you forget a "use" statement for e.g. "Symfony\Component\Security\Core\User\User", "Symfony\Bridge\Doctrine\Tests\Fixtures\User" or "FOS\UserBundle\Model\User"?

  at vendor\friendsofsymfony\user-bundle\Model\UserManager.php:40
  at FOS\UserBundle\Model\UserManager->createUser()
     (vendor\friendsofsymfony\user-bundle\Controller\RegistrationController.php:59)
  at FOS\UserBundle\Controller\RegistrationController->registerAction(object(Request))
     (vendor\symfony\http-kernel\HttpKernel.php:149)
  at Symfony\Component\HttpKernel\HttpKernel->handleRaw(object(Request), 1)
     (vendor\symfony\http-kernel\HttpKernel.php:66)
  at Symfony\Component\HttpKernel\HttpKernel->handle(object(Request), 1, true)
     (vendor\symfony\http-kernel\Kernel.php:190)
  at Symfony\Component\HttpKernel\Kernel->handle(object(Request))
     (public\index.php:37)

How to fix this?

Answer 1

You're using Symfony 4 which doesn't have bundles by default, it stores entities in the src/Entity directory.

The error comes from the namespace in your User class that you probably copied. Try setting the namespace of your class to App/Entity.