it seems that this project is built on the new Input System, maybe should stress this in the description?
Viewing post in 2D Top down controller for Unity comments
It was only mentioned in the installation instructions but its easy to miss so I added it in the description now. However if it's a problem for you, porting it to the old input system should be really easy since only the controller would need to be reworked (I might add an example with the old input system later)