Could not find 1 Android X assemblies.... But its already installed.

Hi,
I'm trying to build my xamarin forms app for android - i've updated all the packages and added the AndroidX ones to the Droid project, however i keep getting an error messages:

Error: Could not find 1 Android X assemblies, make sure to install the following NuGet packages:
- Xamarin.AndroidX.AppCompat.Resources
You can also copy-and-paste the following snippet into your .csproj file:
(MyApp.Droid)

I've already installed Xamarin.AndroidX.AppCompat.Resources to the android project.. i've also removed the package and then re-installed it to the project, cleaned the project, deleted bin / obj folders, restarted visual studio but im still getting the same error message..

Any thoughts on how to fix this??

I'm running Visual Studio Mac 8.4.8 (build 2). Android target framework is 10.0 (Q).

Thanks.