Exception while loading assemblies Xamarin.Android.Support.v4
<p>I am working on visual studio with <strong>Xamarin.Forms</strong>, I get the following Error:</p>

<blockquote>
  <p>Exception while loading assemblies: System.IO.FileNotFoundException:
  Could not load assembly 'Xamarin.Android.Support.v4, Version=1.0.0.0,
  Culture=neutral, PublicKeyToken='. Perhaps it doesn't exist in the
  Mono for Android profile? File name: 'Xamarin.Android.Support.v4.dll' 
  at
  Xamarin.Android.Tuner.DirectoryAssemblyResolver.Resolve(AssemblyNameReference
  reference, ReaderParameters parameters)    at
  Xamarin.Android.Tasks.ResolveAssemblies.AddAssemblyReferences(ICollection`1
  assemblies, AssemblyDefinition assembly, Boolean topLevel)    at
  Xamarin.Android.Tasks.ResolveAssemblies.Execute() SportBook.Droid</p>
</blockquote>

<p>What should I do? </p>