I am not getting the errors the instructor is showing us when I apply the instructions in my Workspace for Namespaces.

So for the C# Basics video on Namespaces, I applied the changes to the code in the corresponding Workspace. I further created a UnitTest file to help me apply what that part of the instructions was showing me. I applied the using directive first and removed the System namespace from its occurrences in the code, then per the instructor's instructions I ran it in the Console. While the instructor's video is showing UnitTest errors, my Workspace is showing errors that the namespace name "VisualStudio" does not exist in the namespace Microsoft as below:

UnitTest1.cs(1,12): error CS0234: The type or namespace name 'VisualStudio ' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?) [/home/treehouse/workspace/workspace.csproj]
UnitTest1.cs(4,14): error CS0234: The type or namespace name 'VisualStudio ' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?) [/home/treehouse/workspace/workspace.csproj]

The build failed. Please fix the build errors and run again.

I'm not sure why the errors on my code, which are what came with the Workspace for Namespaces and what I copied (typed) off of the UnitTest file into a new file on my Workspace, are different from what the video is showing.

Thanks!