Erro ao executar ORM:INFO

Ao executar o comando ORM:INFO, ocorreu o seguinte erro:

In MappingException.php line 50:

  File mapping drivers must have a valid directory path, however the given path [1] seems to be incorrect!  

Classe Aluno:

<?php

namespace Alura\Doctrine\Entity;
/**
 * @Entity
 */
class Aluno
{
    /**
     * @Id
     * @GeneratedValue
     * @Column(type="integer")
     */
    private $id;
    /**
     * @Column(type="string")
     */
    private $nome;

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

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

        return $this;
    }

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

Classe EntityManagerFactory:

<?php

namespace Alura\Doctrine\Helper;

use Doctrine\ORM\EntityManager;
use Doctrine\ORM\EntityManagerInterface;
use Doctrine\ORM\Tools\Setup;

class EntityManagerFactory
{
    /**
     * @return EntityManagerInterface
     * @throws \Doctrine\ORM\ORMException
     */
    public function getEntityManager() : EntityManagerInterface
    {
        $rootDir = __DIR__ . '/../..';   
        $config = Setup::createAnnotationMetadataConfiguration([
            $rootDir . '/src',
            true
        ]);
        $connection = [
            'driver' => 'pdo_sqlite',
            'path' => $rootDir . '/var/data/banco.sqlite'
        ];
        return EntityManager::create($connection, $config);
    }
}

Obs: Estou usando o Visual Studio Code, e a versão instalada do PHP é: 7.4.0