Android 9-patch build Errors

Hello. I am a designer.

I made a 9-patch through figma.

  1. Made with plugins
  2. Do-it-yourself

However, both methods 1 and 2 failed to build Android.

So, I made it through sketch and the build was successful.

Do you know why?
I want to manage assets in figma… please help :pray:

https://www.figma.com/file/P3j7QskqgtVOMtgSFQSUP4/Untitled?node-id=0%3A1