my character animation has bug

I am doing a unreal engine 5.2 project. I use echo for character from Ancient Valley project. And my character has a bug. if it run 5 seconds its leg stay in air but character can moving forward. what can i do?

that’s my input code:

Your text already explain what the problem is, but you didn’t show us the code/setup you have made. Looks to me that is related to the animation sequence problem. Did you change anything that you think it causes the problem?