Symfony4 Authentication request could not be processed due to a system problem - symfony

Question

I’m currently discovering symfony.I am trying to code some user account. There are two role : ADMIN_ROLE or USER_ROLE. When I try to connect an account, I have this message « Authentication request could not be processed due to a system problem. » even when I enter a wrong username/password !
I have been looking for a solution for days (in docs and on internet).
I can fill my database with my user thanks to the fixture (I can see it in SQLyog). I tried to erase ma database to create it again.
This is my security.yaml :
# https://symfony.com/doc/current/security.html#where-do-users-come-from-user-providers
providers:
# used to reload user from session & other features (e.g. switch_user)
app_user_provider:
entity:
class: App\Entity\User
property: username
firewalls:
dev:
pattern: ^/(_(profiler|wdt)|css|images|js)/
security: false
main:
anonymous: ~
form_login:
login_path: login
check_path: login
logout:
path: app_logout
# activate different ways to authenticate
# https://symfony.com/doc/current/security.html#firewalls-authentication
# https://symfony.com/doc/current/security/impersonating_user.html
# switch_user: true
# Easy way to control access for large sections of your site
# Note: Only the *first* access control that matches will be used
access_control:
- { path: ^/login, roles: IS_AUTHENTICATED_ANONYMOUSLY }
- { path: ^/admin, roles: ROLE_ADMIN }
- { path: ^/, roles: ROLE_USER }
This is my UtilisateurFixtures (to create false data)
<?php
namespace App\DataFixtures;
use App\Entity\Utilisateur;
use Doctrine\Bundle\FixturesBundle\Fixture;
use Doctrine\Common\Persistence\ObjectManager;
use Symfony\Component\Security\Core\Encoder\UserPasswordEncoderInterface;
use Symfony\Component\Security\Core\User\User;
//use Symfony\Bridge\Doctrine\Tests\Fixtures\User;
class UtilisateurFixtures extends Fixture
{
/**
* #var UserPasswordEncoderInterface
*/
private $encoder;
public function __construct(UserPasswordEncoderInterface $encoder)
{
$this->encoder = $encoder;
}
public function load(ObjectManager $manager)
{
$user = new Utilisateur();
$user->setUsername('demo3');
$user->setPassword($this->encoder->encodePassword($user,'demo3'));
$user->setRoles(['ROLE_USER', 'ROLE_ADMIN']);
$manager->persist($user);
$manager->flush();
}
}
This is my SecurityController :
<?php
namespace App\Controller;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
use Symfony\Component\Security\Http\Authentication\AuthenticationUtils;
class SecurityController extends AbstractController
{
/**
* #Route("/login", name="login")
*/
public function login(AuthenticationUtils $authenticationUtils): Response
{
// get the login error if there is one
$error = $authenticationUtils->getLastAuthenticationError();
// last username entered by the user
$lastUsername = $authenticationUtils->getLastUsername();
return $this->render('security/login.html.twig', ['last_username' => $lastUsername, 'error' => $error]);
}
/**
* #Route("/logout", name="app_logout", methods={"GET"})
*/
public function logout()
{
// controller can be blank: it will never be executed!
throw new \Exception('Don\'t forget to activate logout in security.yaml');
}
}
This is my Utilisateur.php :
<?php
namespace App\DataFixtures;
use App\Entity\Utilisateur;
use Doctrine\Bundle\FixturesBundle\Fixture;
use Doctrine\Common\Persistence\ObjectManager;
use Symfony\Component\Security\Core\Encoder\UserPasswordEncoderInterface;
use Symfony\Component\Security\Core\User\User;
//use Symfony\Bridge\Doctrine\Tests\Fixtures\User;
class UtilisateurFixtures extends Fixture
{
/**
* #var UserPasswordEncoderInterface
*/
private $encoder;
public function __construct(UserPasswordEncoderInterface $encoder)
{
$this->encoder = $encoder;
}
public function load(ObjectManager $manager)
{
$user = new Utilisateur();
$user->setUsername('demo3');
$user->setPassword($this->encoder->encodePassword($user,'demo3'));
$user->setRoles(['ROLE_USER', 'ROLE_ADMIN']);
$manager->persist($user);
$manager->flush();
}
}
This is my login.htlml.twig (where there is my form) :
{% extends 'base.html.twig' %}
{% block title %}Log in!{% endblock %}
{% block body %}{% if error %}
{{ error.messageKey|trans(error.messageData, 'security') }}
{% endif %}
<form action="{{ path('login') }}" method="post">
<label for="username">Username:</label>
<input type="text" id="username" name="_username" value="{{ last_username }}" />
<label for="password">Password:</label>
<input type="password" id="password" name="_password" />
<input type="hidden" name="_target_path" value="/" />
{#
If you want to control the URL the user
is redirected to on success (more details below)
<input type="hidden" name="_target_path" value="/account" />
#}
<button type="submit">login</button>
</form>
{% endblock %}
This is UtilisateurRepository :
<?php
namespace App\Repository;
use App\Entity\Utilisateur;
use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
use Symfony\Bridge\Doctrine\Security\User\UserLoaderInterface;
use Symfony\Bridge\Doctrine\RegistryInterface;
/**
• #method Utilisateur|null find($id, $lockMode = null, $lockVersion = null)
• #method Utilisateur|null findOneBy(array $criteria, array $orderBy = null)
• #method Utilisateur[] findAll()
• #method Utilisateur[] findBy(array $criteria, array $orderBy = null, $limit = null, $offset = null)
*/
class UtilisateurRepository extends ServiceEntityRepository
{
public function __construct(RegistryInterface $registry)
{
parent::__construct($registry, Utilisateur::class);
}
// /**
// * #return Utilisateur[] Returns an array of Utilisateur objects
// /
/
public function findByExampleField($value)
{
return $this->createQueryBuilder('u')
->andWhere('u.exampleField = :val')
->setParameter('val', $value)
->orderBy('u.id', 'ASC')
->setMaxResults(10)
->getQuery()
->getResult()
;
}
*/
/*
public function findOneBySomeField($value): ?Utilisateur
{
return $this->createQueryBuilder('u')
->andWhere('u.exampleField = :val')
->setParameter('val', $value)
->getQuery()
->getOneOrNullResult()
;
}
*/
}
Thank you for your help ! Don't hesitate if you need anything.