Assets.car can't contain 16-bit or P3 assets if the app supports iOS 8 or earlier?

Question

Has anyone come across this error when uploading to iTunesConnect. Upload precess gets to \"Verifying assets with iTunes store\" the I get the following error:

Answer 1

use these command to install imagemagick

brew update
brew install imagemagick --with-little-cms --with-little-cms2

now, use following steps to check 16 depth assets used in project:

1) Change the extension of .ipa to .zip. 

2) Expand the .zip file. This will produce a Payload folder containing your .app bundle. 

3) Open a terminal and change the working directory to the top level of your .app bundle cd path/to/Payload/your.app

4) find . -name "*.png" -print0 | xargs -0 identify | grep "16-bit" | awk '{print $1;}' | xargs mogrify -depth 8

  this command will show you corrupted images. Replace these images with 8 depth images.