Error - Ionic Cloud - No .app bundles found in the package

When I build for iOS platform using the Ionic Cloud and then do the upload via Application Loader, I get the error message: “No .app bundles found in the package”

I was getting the same error for submitting our app earlier today.
Solved it by submitting the .ipa with application loader on El Capitan (using a colleagues macbook), it kept failing on my Sierra.