WebView clear cache issue (UWP)

Hi, I followed this example for clearing cache: https://forums.xamarin.com/discussion/100239/webview-cache-uwp-how-to-clear and it works fine on iOS, but when I'm trying to run on UWP, I'm getting the following error in App.xaml.cs from uwp(line 55 at Xamarin.Forms.Forms.Init(e);):
System.IO.FileNotFoundException: 'Could not load file or assembly 'clrcompression, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified.'

I've tried to run my project without the clearing cache method and is working in UWP without that. So what I'm doing wrong?