Does model serialization have any restriction?

Hi to everybody,
I’m new with this mobile framework provided by Pytorch.
I’m trying to customize the HelloWorld app using a model trained by me, but as I launch the app on Android Studio, the app on the virtualized device crashes.
I put my model into the asset folder and change the value of the variable that contains the proper name of the model.
So I cannot understand why it doesn’t work, could anybody help me with this?
Thanks a lot.