This bundle is invalid - Your archive contains paths that are not allowed: ( “AppThinning.plist” )

Question

We made an archive with Xcode 9.
We exported this archive with Xcode 9.
We successfully uploaded the app to iTunes Connect with Application Loader. Yet, soon after, we g

Answer 1

When you're exporting with Xcode 9 or later, they will ask you if you want to Strip Swift symbols:

Well, don't uncheck it! And the error will be gone.