title: Exception has been thrown by the target of an invocation? Xamarin Forms
body: <p>So I was trying to design the login page for my new app in Xamarin forms/ Cross-Platform Application.And Everything was going well until I tried to debug it and I got an error saying </p>
  
  <blockquote>
    <p>"Exception has been thrown by the target of an invocation"</p>
  </blockquote>
  
  <p><img src="https://i.stack.imgur.com/0dVVK.png" alt="My code"></p>
  
  <p>That's my code, also there error keeps saying it's on line 1</p>