title: Cannot complete the first Xamarin tutorial due to error: Package System.Numerics.Vectors 4.5.0 Not Compatible with netstandard2.0
body: <p>I am very new to programming but I am very technical with computers. I have run into an issue with the first tutorial of Xamarin where you create an 'AwesomeApp' and just run it on a basic android emulator.</p>
  <p><a href="https://i.stack.imgur.com/qs7k9.jpg" rel="nofollow noreferrer">Here are the 2 error messages I'm getting. I assume the issue is coming from the second one.</a></p>
  <p>The message reads:</p>
  <p>NU1202 Package System.Numerics.Vectors 4.5.0 is not compatible with netstandard2.0 (.NETStandard,Version=v2.0). Package System.Numerics.Vectors 4.5.0 supports:</p>
  <ul>
  <li>monoandroid10 (MonoAndroid,Version=v1.0)</li>
  <li>monotouch10 (MonoTouch,Version=v1.0)</li>
  <li>netcoreapp2.0 (.NETCoreApp,Version=v2.0)</li>
  <li>uap10.0.16299 (UAP,Version=v10.0.16299)</li>
  <li>xamarinios10 (Xamarin.iOS,Version=v1.0)</li>
  <li>xamarinmac20 (Xamarin.Mac,Version=v2.0)</li>
  <li>xamarintvos10 (Xamarin.TVOS,Version=v1.0)</li>
  <li>xamarinwatchos10 (Xamarin.WatchOS,Version=v1.0) AwesomeApp C:\Users\jayce\source\repos\AwesomeApp\AwesomeApp\AwesomeApp\AwesomeApp.csproj 1</li>
  </ul>
  <p><a href="https://i.stack.imgur.com/XO3aO.jpg" rel="nofollow noreferrer">Also, this is what shows with the System.Numerics.Vectors list in the solutions tab</a></p>
  <p>I'm unsure of what to do at this point as I've searched the internet for an answer and nothing has seemed to work. I've tried reinstalling VS twice and using the 2017 version, but nothing has worked.</p>