Fix some sharing errors on my Android/iOS app

Hello, everyone.
I've one mobile app that will be famous and funny built with Android/iOS Native platform.
But it has some two minor errors not fixed yet. That's sharing errors.

The purpose of job is to share images via Instagram and Yahoo mail.

First, when I press Instagram button, Suddenly "Unsupported file type" message showed on screen and exited from Instagram so I can't share images via Instagram.

Second, when I press Yahoo mail button, Suddenly image couldn't put on [Cc, Bcc]box and error showed. But on Gmail it worked well.

I don't know why they happened and how to fix them.

Please contact me when you can fix them and share me good solution.

Thanks!
Andrei!