AI enemies not moving | RPG Tutorial

I’ve been following the Virtus Hub RPG Tutorial. The enemies I created are not moving now previously they were but around 28th or 30th tutorial they stopped moving and were standing in their ideal position. I’ve checked all the blueprints and I’ve also created another ai for the enemy with everything same but it doesn’t seems to work.
Can anyone help me out with it I’m new to this.
I’ve followed it step by step.

Link to the RPG Tutorial -

Thanks in advance!

It worked. I deleted Nav mesh and recast nav mesh and then added them again