marketplace

[natdroid]

Hello. I have a 100% working extension but when i'm Adding a New Extension  I have got an error:

Missing file / storefront / models / show_weight / show_weight. php.
Check your archived package, correct issues and re-upload again

My model file locates in the  / storefront / model / show_weight/ show_weight. php
but if I rename it to models extension doesn't work at all.  Need your help. How to fix marketplace issue?