Java.Interop.Tools.Diagnostics.XamarinAndroidException: error XA2006:

I am getting error when I try to build my xamarin forms app, I am getting following error
Severity Code Description Project File Line Suppression State
Error Java.Interop.Tools.Diagnostics.XamarinAndroidException: error XA2006: Could not resolve reference to 'mmMobile.Droid.Core.ICompletionHandler' (defined in assembly 'mmMobile.Droid, Version=8.9.0.5, Culture=neutral, PublicKeyToken=null') with scope 'mmMobile.Droid.Core, Version=8.9.0.5, Culture=neutral, PublicKeyToken=null'. When the scope is different from the defining assembly, it usually means that the type is forwarded. ---> Mono.Cecil.ResolutionException: Failed to resolve mmMobile.Droid.Core.ICompletionHandler
at Mono.Linker.Steps.MarkStep.HandleUnresolvedType(TypeReference reference)
at Mono.Linker.Steps.MarkStep.MarkType(TypeReference reference)
at MonoDroid.Tuner.MonoDroidMarkStep.MarkType(TypeReference reference)
at Mono.Linker.Steps.MarkStep.MarkInterfaceImplementation(InterfaceImplementation iface)
at Mono.Linker.Steps.MarkStep.MarkEntireType(TypeDefinition type)
at Mono.Linker.Steps.MarkStep.MarkEntireAssembly(AssemblyDefinition assembly)
at Mono.Linker.Steps.MarkStep.InitializeAssembly(AssemblyDefinition assembly)
at Mono.Linker.Steps.MarkStep.Initialize()
at Mono.Linker.Steps.MarkStep.Process(LinkContext context)
at MonoDroid.Tuner.MonoDroidMarkStep.Process(LinkContext context)
at Mono.Linker.Pipeline.ProcessStep(LinkContext context, IStep step)
at Mono.Linker.Pipeline.Process(LinkContext context)
at MonoDroid.Tuner.Linker.Process(LinkerOptions options, ILogger logger, LinkContext& context)
at Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)
--- End of inner exception stack trace ---
at Xamarin.Android.Tasks.LinkAssemblies.Execute(DirectoryAssemblyResolver res)
at Xamarin.Android.Tasks.LinkAssemblies.RunTask()
at Xamarin.Android.Tasks.AndroidTask.Execute() SunriseMobileX.Android
I am adding new reference dll mmMobile.Droid and mmMobile.Droid.Core ( its third party assembly )
Thanks
Prashant Chavan