Default FPS controller randomly broke

Hello all, super new to Unreal and these forums. I recently started a new FPS project with the default controller and everything was working fine until today. All of a sudden when I try to run the game, the character can’t move and I get an error and I can’t understand why. I have not touched anything with the default controller but all of a sudden this error started occurring. Any thoughts would be great as now I can’t continue my project until this is resolved.

The image cuts on when it mentions the actor causing the issue. Have you tried to run the project on a new map? It could be that you haven’t setup your GameMode properly.

It shows that it is the “isfalling” part of the Arms animation if I remember correctly. I haven’t tried in on a different map yet, and my game mode was working fine until this. Everything was working one day when I closed the Engine and then the next day when I opened it this error started.