Contentify: Some errors with form on branch dev2.0

Hi,

I write comment and contentify return error:

LogicException in Model.php line 2702:
Relationship method must return an object of type Illuminate\Database\Eloquent\Relations\Relation

Others errors: admin/adverts/12/restore : Call to a member function restore() on null

admin/adverts/12?method=DELETE&_token=TwFxFsGuQkqMxIxJN2GfHNE5P7bWV9z7OMULONkM: Call to a member function modifiable() on null

admin/adverts/12/edit : No query results for model [App\Modules\Adverts\Advert].

I dont know why 😭 I use Contentify dev2.0.

Thank you for your help