Hello Brian.
Now my Visual studio work normally, I think you forget to add Controls.IUIActions at the start of the script.
I was surprised he doesn’t ask me i’ve no implementation for OnInventory and OnCancel event 
When I read me I amused I’m surprised I don’t get an error message in my virtual studio code lol.
For futur students, if you create another Action map in your control panel:
Add this after Controls.IPlayerActions:
`public class InputReader : MonoBehaviour, Controls.IPlayerActions, Controls.IUIActions`
VSC will ask you to implement the method.
Another remark, I think, watching your final project that the futur real name for ManagedWindow.cs script must be WindowController.cs
No ?
Schuuss
François