No translation form found with default entity translations

I am trying to create a translation translation form

http://a2lix.fr/bundles/translation-form/ and https://github.com/Atlantic18/DoctrineExtensions/blob/master/doc/translatable.md#translatable-entity-example

composer.json

    "a2lix/translation-form-bundle": "2.*@dev",
    "stof/doctrine-extensions-bundle": "1.2.*@dev",

      

        
        
        
      

    

config.yml

stof_doctrine_extensions: default_locale: en ORM: default: translitable: true sluggable: true sluggable: true timestampable: true

a2lix_translation_form:
    locale_provider: default       # [1]
    locales: [pl, en, de]          # [1-a]
    default_locale: en
    manager_registry: doctrine      # [2]
    templating: "A2lixTranslationFormBundle::default.html.twig"

      

        
        
        
      

    

entity

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\ORM\Mapping as ORM;
use APY\DataGridBundle\Grid\Mapping as GRID;
use Gedmo\Mapping\Annotation as Gedmo;
use Gedmo\Translatable\Translatable;
use Symfony\Component\Validator\Constraints as Assert;

/**
 * @ORM\Entity
 * @ORM\Table(name="c_Base"
    ,indexes={
 *      @ORM\Index(name="search_name", columns={"name"}),
 *      @ORM\Index(name="orderCity", columns={"city"})
 * })
 */
class Base  implements Translatable{

    /**
     * @ORM\Column(type="bigint")
     * @ORM\Id
     */
    private $id;

    /**
     * Hexaid
     * @var string
     */
    private $hid;

    /**
     * @ORM\Column(type="string")
     * @GRID\Column(title="name")
     * @Gedmo\Translatable
     * @var string
     */
    private $name;

    /**
     * @Gedmo\Locale
     * Used locale to override Translation listener`s locale
     * this is not a mapped field of entity metadata, just a simple property
     */
    private $locale;

      

        
        
        
      

    

build a shape

public function buildForm (FormBuilderInterface $ builder, array $ options) {

    $builder

        ->add('translations', 'a2lix_translations', array(
                'fields'=>array(
                    'name'=>array(),
                    'description'=>array(
                        'field_type' => 'ckeditor'
                    )
                )
            )
        );

      

        
        
        
      

    

mistake

Neither the property "translations" nor one of the methods "getTranslations()", "translations()", "isTranslations()", "hasTranslations()", "__get()" exist and have public access in class "Mea\CharterBundle\Entity\Base".

      

        
        
        
      

    

I won't have private $ translations; var in the database - because there is a public translation - in the example for personal translations there are $ translations https://github.com/Atlantic18/DoctrineExtensions/blob/master/doc/translatable.md#personal-translations

but there is no for https://github.com/Atlantic18/DoctrineExtensions/blob/master/doc/translatable.md#translatable-entity-example .

Can I use it at http://a2lix.fr/bundles/translation-form/ ?

here's another example DoctrineExtensions Notification: Undefined index: foreignKey in $ em-> getRepository ('Gedmo \\ Translatable \\ Entity \\ Translation');