@rande see below (and it seems related with the scope issue).

```
php app/console sonata:admin:explain coop_tilleuls_xxx.admin.news

[...]

Form Fields


                                                                                               
  [Symfony\Component\DependencyInjection\Exception\InactiveScopeException]                     
  You cannot create a service ("ivory_ck_editor.form.type") of an inactive scope ("request").  
```