"Rigid Body" movement not making character walk anymore

I was messing around with one of my AI and noticed that it wasn’t moving anymore. 1) It is running the desired behavior tree 2) The BT tasks are running just fine 3) The BT is called in the AI Controller 4) The navmesh my AI’s on has complete coverage of the map. Instead of its movement mode being “Walking” it’s “Rigid Body”. I have no idea what this means!