If you don't chose an image in the form, the show.html.twig throw an exception

[lenybernard]

I think this make sense to require the image form type, what do you think ?

[LoicGoyet]

I guess it make sense, but why not just don't save the form ?

[lenybernard]

The image form type is now required but also nullable, It can't be nullable because of business entity mode where image_id is no more required and the image field is saved in fields one.

We need to :

1. Rollback
2. Set the image_id required (only in static mode)