WUT? Axis and Action mappings are now deprecated, please use Enhanced Input Acitons and Input Mapping Contexts instead.

[TaraBryn]

If anyone is still having issues with this, I found a video that helped me: https://www.youtube.com/watch?v=d2j5agECdOo&list=PLY3NARqxrFEcYNmNfbxV6xGjaePlqM50L&index=4/