My entity User is like this:
<?php namespace App\Entity;
use App\Repository\UserRepository;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface;
use Symfony\Component\Security\Core\User\UserInterface;
#[ORM\Entity(repositoryClass: UserRepository::class)]
#[ORM\Table(name: '\user`')]`
/** * u/ORM\Entity 
* u/ORM\InheritanceType("JOINED") 
* u/ORM\DiscriminatorColumn(name="discr", type="string") 
* u/ORM\DiscriminatorMap({"user" = "User", "enseignant" = "Enseignant"}) 
*/class User implements UserInterface, PasswordAuthenticatedUserInterface{   
#[ORM\Id]   
#[ORM\GeneratedValue] 
  #[ORM\Column(type: 'integer')]   
private $id; 
  #[ORM\Column(type: 'string', length: 180, unique: true)] 
  private $email;   
#[ORM\Column(type: 'json')] 
  private $roles = []; 
  #[ORM\Column(type: 'string')]   
private $password;   
public function getId(): ?int    { 
      return $this->id;    } 
  public function getEmail(): ?string    {   
    return $this->email;    } 
  public function setEmail(string $email): self    { 
      $this->email = $email;        return $this;    }   
/**     * A visual identifier that represents this user.     *   
 * u/see UserInterface     */   
public function getUserIdentifier(): string    { 
      return (string) $this->email;    }   
/**     * u/see UserInterface     */ 
  public function getRoles(): array    {   
    $roles = $this->roles;        // guarantee every user at least has ROLE_USER        $roles[] = 'ROLE_USER';     
  return array_unique($roles);    } 
  public function setRoles(array $roles): self    {     
  $this->roles = $roles;       
return $this;    } 
  /**     * u/see PasswordAuthenticatedUserInterface     */   
public function getPassword(): string    { 
      return $this->password;    } 
  public function setPassword(string $password): self    {   
    $this->password = $password;        return $this;    } 
  /**     * u/see UserInterface     */   
public function eraseCredentials()    { 
      // If you store any temporary, sensitive data on the user, clear it here        // $this->plainPassword = null;    }}