PHP Fatal error: Uncaught Doctrine\ORM\Exception\EntityMissingAssignedId: Entity of type Alura\Doctrine\Entity\Telefone is missing an assigned ID for field 'id'.

Boa tarde,

Está dando erro, quando uso o comando "php commands\criar-aluno.php" com o nome e telefone na aula de "Atualizando o CRUD de Aluno", o erro é esse:

PHP Fatal error: Uncaught Doctrine\ORM\Exception\EntityMissingAssignedId: Entity of type Alura\Doctrine\Entity\Telefone is missing an assigned ID for field 'id'. The identifier generation strategy for this entity requires the ID field to be populated before EntityManager#persist() is called. If you want automatically generated identifiers instead you need to adjust the metadata mapping accordingly. in C:\Users\felip\doctrine-alura\vendor\doctrine\orm\lib\Doctrine\ORM\Exception\EntityMissingAssignedId.php:16 Stack trace:

#0 C:\Users\felip\doctrine-alura\vendor\doctrine\orm\lib\Doctrine\ORM\Id\AssignedGenerator.php(34): Doctrine\ORM\Exception\EntityMissingAssignedId::forField()

#1 C:\Users\felip\doctrine-alura\vendor\doctrine\orm\lib\Doctrine\ORM\UnitOfWork.php(989): Doctrine\ORM\Id\AssignedGenerator->generateId()

#2 C:\Users\felip\doctrine-alura\vendor\doctrine\orm\lib\Doctrine\ORM\UnitOfWork.php(1815): Doctrine\ORM\UnitOfWork->persistNew()

#3 C:\Users\felip\doctrine-alura\vendor\doctrine\orm\lib\Doctrine\ORM\UnitOfWork.php(1 in C:\Users\felip\doctrine-alura\vendor\doctrine\orm\lib\Doctrine\ORM\Exception\EntityMissingAssignedId.php on line 16

segue abaixo os códigos que usei

criar-aluno.php

<?php

use Alura\Doctrine\Entity\Aluno;
use Alura\Doctrine\Entity\Telefone;
use Alura\Doctrine\Helper\EntityManagerFactory;

require_once __DIR__ . '/../vendor/autoload.php';

$aluno =  new Aluno();
$aluno-> setNome($argv[1]);

$entityManagerFactory = new EntityManagerFactory();
$entityManager = $entityManagerFactory->getEntityManager();

for ($i =2; $i< $argc; $i++) {
    $numeroTelefone = $argv[$i];
    $telefone = new Telefone();
    $telefone->setNumero($numeroTelefone);

    $entityManager->persist($telefone);

    $aluno->addTelefones($telefone);
}

$entityManager->persist($aluno);

$entityManager->flush();

Aluno.php

<?php

namespace Alura\Doctrine\Entity;

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;

/**
 * @Entity
 */
class Aluno
{
    /**
     * @Id
     * @GeneratedValue
     * @Column(type="integer")
     */
    private $id;
    /**
     * @Column(type="string")
     */
    private $nome;
    /**
     * @OneToMany(targetEntity="Telefone", mappedBy="aluno")
     */
    private $telefones;

    public function __construct()
    {
        $this->telefones =  new ArrayCollection();        
    }

    public function getId(): int
    {
        return $this->id;
    }

    public function getNome(): string
    {
        return $this->nome;
    }

    public function setNome(string $nome): self
    {
        $this->nome = $nome;
        return $this;
    }

    public function addTelefones(Telefone $telefone)
    {
        $this->telefones->add($telefone);
        $telefone->getAluno($this);

        return $this;
    }

    public function getTelefones(): Collection
    {
        return $this->telefones;
    }
}

Telefone.php

<?php

namespace Alura\Doctrine\Entity;

/**
 * @Entity
 */

class Telefone
{
    /**
     * @Id
     * @GenerateValue
     * @Column(type="integer")
     */
    private $id;
    /**
     * @Column(type="string")
     */
    private $numero;
    /**
     * @ManyToOne(targetEntity="Aluno")
     */
    private $aluno;

    public function getId():int
    {
        return $this->id;
    }

    public function setIt(int $id): self
    {
        $this->id = $id;
        return $this;
    }

    public function getNumero(): string
    {
        return $this->numero;
    }

    public function setNumero(string $numero): self
    {
        $this->numero = $numero;
        return $this;
    }
    public function getAluno(): Aluno
    {
        return $this->aluno;
    }
    public function setAluno(Aluno $aluno): self
    {
        $this->aluno = $aluno;
        return $this;
    }
}