Тип формы Symfony3 и отношение ManyToMany

Как настроить тип формы с отношением "многие ко многим"?

Ниже конфигурация ...

Форма / Тип / ProductType.php

$builder
    ->add('name')
    ->add('price')
    ->add('description', TextareaType::class)
    ->add('quantity')
    ->add('shopProductImages', EntityType::class, [
        'class'        => 'AppBundle:ShopProductImages',
        'choice_label'=>'file',
        'query_builder' => function (EntityRepository $repo) {
            return $repo->createQueryBuilder('f')
                ->where('f.id > :id')
                ->setParameter('id', 1);
        },

    ])

public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults([
        'data_class' => ShopProducts::class,
    ]);
}

Entity / ShopProducts.php

/**
 * @ORM\Table(name = "shop_products")
 * @ORM\Entity
 */
class ShopProducts
{
    /**
     * @var \Doctrine\Common\Collections\Collection
     *
     * @ORM\ManyToMany(targetEntity = "AppBundle\Entity\ShopProductImages", mappedBy = "shopProducts")
     */
    private $shopProductImages;

Entity / ShopProductImages.php

 * @ORM\Table(name = "shop_product_images")
 * @ORM\Entity
 */
class ShopProductImages
{
    /**
     * @var string
     *
     * @ORM\Column(name = "file", type = "text", length=255, nullable=true)
     */
    private $file;

    /**
     * @var \DateTime
     *
     * @ORM\Column(name = "date_mod", type = "datetime", nullable=true)
     */
    private $dateMod;

    /**
     * @var integer
     *
     * @ORM\Column(name = "id", type = "integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy = "IDENTITY")
     */
    private $id;

    /**
     * @var \Doctrine\Common\Collections\Collection
     *
     * @ORM\ManyToMany(targetEntity = "AppBundle\Entity\ShopProducts", inversedBy = "shopProductImages")
     * @ORM\JoinTable(name = "shop_product_images_has_shop_products",
     *   joinColumns = {
     *     @ORM\JoinColumn(name = "shop_product_images_id", referencedColumnName = "id")
     *   },
     *   inverseJoinColumns = {
     *     @ORM\JoinColumn(name = "shop_products_id", referencedColumnName = "id")
     *   }
     * )
     */
    private $shopProducts;

... заканчивается ошибкой