Free Camera + System Input not working with mouse

Unity Engine
1

I’m currently trying to learn how to use Cinemachine, and have found a tutorial on how to make it work with the newer Input System.

(The video in question:

)

Here is what I have in Unity:

However, when I click Play and move my mouse, nothing happens. Would anyone be willing and able to help figure out what I did wrong?

2

SOLVED: Reinstalled and recreated everything from scratch, and it works as intended now.