Exception in thread "main" javax.persistence.PersistenceException

Ao tentar executar a classe TesteCriaTabelas está retornando o erro abaixo, mas conferi várias vezes o código e não consigo entender o porque do erro

Mensagem de Erro:

Exception in thread "main" javax.persistence.PersistenceException: No Persistence provider for EntityManager named contas at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:85) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54) at br.com.alura.jpa.testes.TesteCriaTabelas.main(TesteCriaTabelas.java:9)

Código classe TesteCriaTabelas:

package br.com.alura.jpa.testes;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

public class TesteCriaTabelas {
    public static void main(String[] args) {
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("contas");
        EntityManager createEntityManager = emf.createEntityManager();
        emf.close();


    }
}

Conteúdo do arquivo persistence.xml

package br.com.alura.jpa.testes;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

public class TesteCriaTabelas {
    public static void main(String[] args) {
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("contas");
        EntityManager createEntityManager = emf.createEntityManager();
        emf.close();


    }
}