Visual composer model doesn't open (corrupt)

Hello,

I have a Visual Composer Model (7.31 Sp11) which work good last time I worked with it (model has been deployed without error).

Now I can't open the model, I don't get any error but the model doesn't open. When I look at the references, one object is marked as missing.

This model was not defined as application and has been added to a main Model as sub-application.

Now the main model gives the error that my sub-model doesn't exist anymore whereas I can see my sub-model in my local repository.

Is there any solution to repair my model (I work with the Web version)?

Thanks in advance

Kind Regards

Valérie