fiz como na aula e coloquei o

<?php 

namespace Alura\Doctrine\Entity;

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

/**
 * @Entity(repositoryClass="Alura\Doctrine\Repository\AlunoRepository")
 */
class Aluno 
{
    /**
     * @Id
     * @GeneratedValue
     * @Column(type="integer")
     */
    private int $id;
    /**
     * @Column(type="string")
     */
    private string $nome;
    /**
     * @OneToMany(targetEntity="Telefone", mappedBy="aluno", cascade={"remove", "persist"})
     */
    private $telefones;
    /**
     * @ManyToMany(targetEntity="Curso", mappedBy="alunos")
     */
    private $cursos;

na class Aluno e mesmo assim no arquivo relatorio-cursos-aluno-repository.php

<?php

use Alura\Doctrine\Entity\Aluno;
use Alura\Doctrine\Entity\Telefone;
use Alura\Doctrine\Helper\EntityManagerFactory;
use Doctrine\DBAL\Logging\DebugStack;

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


$entityManagerFactory = new EntityManagerFactory();
$entityManager = $entityManagerFactory -> getEntityManager();
$alunosRepository = $entityManager->getRepository(Aluno::class);

$debugStack = new DebugStack();
$entityManager->getConfiguration()->setSQLLogger($debugStack);
/**@var Aluno[] $alunos */
$alunos = $alunosRepository->buscaCursosPorAluno();

o buscaCursosPorAluno(); fica marcado como erro Undefined method 'buscaCursosPorAluno . intelephense(1013) e quando tento rodar aparece isso

PS C:\Users\luize\OneDrive\Documentos\alura\doctrine\commands> php relatorio-cursos-aluno-repository.php
PHP Fatal error:  Uncaught Doctrine\ORM\Query\QueryException: SELECT aluno, telefones, cursos FROM Alura\Doctrine\Repository\Aluno aluno JOIN aluno.telefones telefones JOIN aluno.cursos cursos in C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\QueryException.php:43
Stack trace:
#0 C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\Parser.php(506): Doctrine\ORM\Query\QueryException::dqlError('SELECT aluno, t...')
#1 C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\Parser.php(1004): Doctrine\ORM\Query\Parser->semanticalError('line 
0, col 37 ...', Array)
#2 C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\Parser.php(1750): Doctrine\ORM\Query\Parser->validateAbstractSchemaName('Alura\\Doctrine\\...')
#3 C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\Parser.php(1601): Doctrine\ORM\Query\Parser->RangeVariableDeclara in C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\QueryException.php on line 65

Fatal error: Uncaught Doctrine\ORM\Query\QueryException: SELECT aluno, telefones, cursos FROM Alura\Doctrine\Repository\Aluno aluno JOIN aluno.telefones telefones JOIN aluno.cursos cursos in C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\QueryException.php:43
Stack trace:
#0 C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\Parser.php(506): Doctrine\ORM\Query\QueryException::dqlError('SELECT aluno, t...')
#1 C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\Parser.php(1004): Doctrine\ORM\Query\Parser->semanticalError('line 0, col 37 ...', Array)
#2 C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\Parser.php(1750): Doctrine\ORM\Query\Parser->validateAbstractSchemaName('Alura\\Doctrine\\...')
#3 C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\Parser.php(1601): Doctrine\ORM\Query\Parser->RangeVariableDeclara in C:\Users\luize\OneDrive\Documentos\alura\doctrine\vendor\doctrine\orm\lib\Doctrine\ORM\Query\QueryException.php on line 65

arquivo AlunoRepository.php esta assim

<?php


namespace Alura\Doctrine\Repository;

use Alura\Doctrine\Entity\Telefone;
use Doctrine\ORM\EntityRepository;


class AlunoRepository extends EntityRepository
{

    public function buscaCursosPorAluno()
    {
        $query = $this->createQueryBuilder('aluno')
        ->join('aluno.Telefone', 'telefone')
        ->join('aluno.cursos', 'cursos')
        ->addSelect('telefone')
        ->addSelect('cursos')
        ->getQuery();

        return $query->getResult();
    }
}