The type or namespace name 'Xamarin' missing error in Xamarin Studio

Question

I\'m getting this error:

\"MyApp\\App.cs(7,7): Error CS0246: The type or namespace name \'Xamarin\' could not be found (are you missing a using di

Answer 1

I have to combine some previous answers:

• Reinstall Nugets (Xamarin.Forms)
• Restart VS2019