In my project for Xamarin I have a strange error message: Project Android.Common is not compatible with netstandard2.0 (.NETStandard,Version=v2.0). Project Android.Common supports: monoandroid81 (MonoAndroid,Version=v8.1) I use Visual Studio 15.9.5 and Xamarin.Forms 3.4.0.1009999 in the project I don't have any idea how I can resolve.
Any ideas ?