Could not read Entity state from Resultset Entitykey Onetomany composite keys

Question

I’m having trouble in oneToMany relationship of two entities using Jpa Hibernate.

I have two tables, one for cancellation and another that has the orders that are part of the cancellation. The cancellation table has a simple primary key (idcancellation) The table of cancellation requests has a key composed of 4 fields (idcancellation, codigofilial, pedidovenda, tipopedido), I do not know the reason for this structure, as it is a very large base and it works for a long time already.

So I created an entity for the cancel table with the following relationship :

@Column
@OneToMany(cascade = CascadeType.ALL,  fetch = FetchType.EAGER , targetEntity = Pedido.class)
@JoinColumn(name = "idcancelamento")
private List<Pedido> pedidos;

I created an entity for the order table with and the composite key using the Annotation @Idclass

@Id
@Column(name = "idcancelamento")
private Long idCancelamento;

@Id
@Column(name = "codigofilial")
private Long codigoFilial;

@Id
@Column(name = "pedidovenda")
private Long pedidoVenda;

@Id
@Column(name = "tipopedido")
private Integer tipoPedido;

Composite key class

public class PedidoKey implements Serializable {
private static final long serialVersionUID = 9057318800444577701L;

private Long idCancelamento;
private Long codigoFilial;
private Long pedidoVenda;
private Integer tipoPedido;

public PedidoKey(){

}

public PedidoKey(Long idCancelamento, Long codigoFilial, Long pedidoVenda, Integer tipoPedido) {
    this.idCancelamento = idCancelamento;
    this.codigoFilial = codigoFilial;
    this.pedidoVenda = pedidoVenda;
    this.tipoPedido = tipoPedido;
}

@Override
public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    PedidoKey taskId1 = (PedidoKey) o;
    if (!idCancelamento.equals(taskId1.idCancelamento)) return false;
    if (!codigoFilial.equals(taskId1.pedidoVenda)) return false;
    if (!pedidoVenda.equals(taskId1.pedidoVenda)) return false;
    return tipoPedido.equals(taskId1.tipoPedido);
}

@Override
public int hashCode() {
    return Objects.hash(idCancelamento, codigoFilial,pedidoVenda,tipoPedido );
}

}

When I make a query per id and try to access the entity’s request cancellation property the program launches the following exception :

"error ocurred org.springframework.orm.jpa.JpaSystemException: Could not read entity state from ResultSet : EntityKey[com.smn.tdc.information.model.Pedido#component[tipoPedido,pedidoVenda,idCancelamento,codigoFilial]{pedidoVenda=403042676, idCancelamento=7662233, tipoPedido=0, codigoFilial=35}]; nested exception is org.hibernate.exception.GenericJDBCException: Could not read entity state from ResultSet : EntityKey[com.smn.tdc.information.model.Pedido#component[tipoPedido,pedidoVenda,idCancelamento,codigoFilial]{pedidoVenda=403042676, idCancelamento=7662233, tipoPedido=0, codigoFilial=35}]"

I already switched the oneToMany fetch to LAZY, tried @Embeddedid and always have the same exception. The only way that it did not give the error was when I removed the 3 columns of the composite key and left only the idcancellation, but when access to property it returns me only 1 result, and q should return 14.

I don’t know where else to look, I tried a lot of different ways. I appreciate the attention and hope that someone can help.