Go to this section:
And select those two text dropdowns and delete the contents:
Enjoy your now-working iOS packaging.
Wee bit more info: It’s not specifically those settings.
Your project will begin failing to build again if you open it on windows, make any changes and then reopen it on mac. Or it may even just fail randomly.
To fix it again load it on mac, change some settings in the iOS section (such as the above settings) and then change them back, then reload the project. It will build again.