Hello, Xamarin.Forms Multiscreen Issue

I am trying to work through this tutorial:

https://developer.xamarin.com/guides/xamarin-forms/getting-started/hello-xamarin-forms-multiscreen/quickstart/

When I try to build, I get the following error:

Position 14:19. No property, bindable property, or event found for 'ItemsSource', or mismatching type between value and property.
in CallHistoryPage.xaml

I have double checked and all my code matches the example. The first part of the tutorial (Hello, Xamarin.Forms) worked fine. Can anyone help about what may be going on?

In passing, this is a stunningly unhelpful error message. First it combines two quite different errors forcing you to investigate both. Second it says two types mismatch but fails to say what the types are!

Also these tutorials need to be updated to VS2017, in particularly the "new"dialogs are not exactly as shown.

Not a good first impression guys!