Submit ipa file to itunes connect

I build an ipa using adobe.phonegap.build Now I want to submit this file to itunesconnect using Appliction Loader.while submitting ipa in the application loader I'm getting errors

Missing recommended icon file - The bundle does not contain an app icon for iPad of exactly '76x76' pixels, in .png format.

How to fix this. I'm using the same config.xml file for both android and ios app builds. Please help me.