app.iOS could not be restored because error MSB4226: The imported project "/Library/Frameworks/Mono.

I tried running the ios emulator for my application on Visual Studio Mac but it says :

error MSB4226: The imported project "/Library/Frameworks/Mono.framework/Versions/6.4.0/lib/mono/xbuild/Xamarin/iOS/Xamarin.iOS.CSharp.targets" was not found.

FULL ERROR MESSAGE:
/Users/user/Projects/test-ios/test-ios.iOS/test-ios.iOS.csproj(126,11) : error MSB4226: The imported project "/Library/Frameworks/Mono.framework/Versions/6.4.0/lib/mono/xbuild/Xamarin/iOS/Xamarin.iOS.CSharp.targets" was not found. Also, tried to find "Xamarin/iOS/Xamarin.iOS.CSharp.targets" in the fallback search path(s) for $(MSBuildExtensionsPath) - "/Library/Frameworks/Mono.framework/External/xbuild/" and "/Applications/Visual Studio.app/Contents/Resources/lib/monodevelop/AddIns/docker/MonoDevelop.Docker/MSbuild" . These search paths are defined in "/Users/user/Library/Caches/VisualStudio/8.0/MSBuild/4656_1/MonoDevelop.MSBuildBuilder.exe.config". Confirm that the path in the declaration is correct, and that the file exists on disk in one of the search paths.

So I looked up the location of the missing file and Xamarin is missing from the xbuild folder:

Is there any way to fix this? I need to setup both android(working) and ios for my mobile development subject.

Any help is appreciated!

• OS: macOS Mojave 10.14.6

• Visual Studio for Mac: 8.3.8 (build 8)
  Package version: 604000208

• Mono Framework MDK
  Runtime:
  Mono 6.4.0.208 (2019-06/07c23f2ca43) (64-bit)
  Package version: 604000208

• Apple Developer Tools
  Xcode 11.2.1 (15526.1)
  Build 11B500