title: Xamarin Forms Previewer isn't showing
body: <p>I am using xamarin forms v2. 3.2.127 stable on Visual Studio 2015 Community Edition in Windows 10 Operating System. Every time I try to open the xaml, the Xamarin Forms Previewer did not show anything, just a blue box like the screenshot below. I have also tried to create new project even in the latest pre-release channel but it still the same.</p>
  
  <p><a href="https://i.stack.imgur.com/Ylhbn.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Ylhbn.png" alt="enter image description here"></a></p>