title: Show user-friendly error page instead of exception in Flutter
body: <p>Is it possible to make <strong>global error handling</strong> that will <strong>show user-friendly error page instead of showing red exception</strong>?</p>
  
  <p>I already made error handling (<a href="https://flutter.io/docs/cookbook/maintenance/error-reporting" rel="noreferrer">here</a>) that will report exception to the backend but what I really would like to achieve is to hide red exception and show something a little bit frendlier.</p>
  
  <p>I searched everywhere and I found literally nothing. I'm sorry that I don't have any code to show because I have no idea how to start.</p>