Stickers for iMessage like a part an app

Questions
16
  1. Make an stickers.xcassets using xcode with icons
  2. Add to the defold project using bundle_resources
  3. Try to build IPA :

I/O error reading PNG header! iMessage App Icon27x20@2x.png /RedHood/content/external_res/ios/PlugIns/StickerPackExtension.appex line 0 Problem

now i’ll trying to repack and re-sign stickers.xcassets using my original icons png