Four keyboard arrows control the views of the character

Hi, I am currently trying to have my arrow keys change the position on my animation character. For example, the up arrow would show the character facing you, while the down arrow would show the character's backside. I was trying to follow along with this youtube video: https://www.youtube.com/watch?v=uhBp4x9P0IM  and the code used. However, when I go to test mine, and it comes up blank. I have attached my file. I would genuinely appreciate it if someone could help me resolve this issue. Thank you.