UWP: Error in Windows Runtime metadata validation

Question

I have a C# app targeting Windows-10 desktop platform. I am trying to run WACK test for my app & I am seeing this error:

1. FAILED Type location

Error Found: The type location test detected the following errors:

• The types in the Windows.ApplicationModel namespace are located in
  file Windows.Foundation.UniversalApiContract.winmd that does not
  match the namespace.

2. FAILED Type name correctness

Error Found: The type name correctness test detected the following errors:

• The Windows.ApplicationModel.AddResourcePackageOptions type in the
  Windows.Foundation.UniversalApiContract.winmd file is in the Windows namespace.

3. FAILED General metadata correctness

Error Found: The general metadata correctness test detected the following errors:

• The type Windows.UI.Xaml.Media.Animation.IConnectedAnimationConfiguration in file Windows.Foundation.UniversalApiContract.winmd has the same GUID as the following types: Windows.UI.Xaml.Media.Animation.IConnectedAnimationConfiguration. All GUIDs must be unique.