Introduction to third person shooter with BP trouble shooting

I was doing the exercise “Introduction to Third Person Blueprint game”. I am in the 20th video where we should be able to move, look, jump and punch. The next step in this video was to fix the punching while moving. Here I am unable to punch while moving. I get a sound when I try this, I can do all actions including punch but I cant punch while moving what I might have done wrong? where should I look?