My pytorch.mobile model can not be loaded! APP CLOSED!

Hi, i made my pytorch.mobile(.pt file) by convert code

and in JAVA I loaded

import org.pytorch.Module;
module = Module.load(assetFilePath(this, “model_OCR.pt”));

but app is just closed when launched… (the demo model.pt offered by pytorch team is working well.
why it is crushed…??? I don know why…
(APP is build successfully)