VS 2017, XCode 11.0, iOS13: Failed to compile the generated registrar code.

I've been using Xamarin Forms for over a year but since the recent release of iOS 13.0, my iOS builds are failing with the error message:
Failed to compile the generated registrar code. Please file a bug report at bugzilla.xamarin.com.

I am using VS 2017 for Windows with a paired Mac Mini running:
macOS Mojave 10.14.6
XCode 11.0 (11A420a)
Visual Studio 2017 - 15.9.16

During the build process an iOS executable is created, a signing identity is detected and then I get the attached error output. Is this a known issue?

Thanks,
Mike Gordon