Action Mappings Not Working

I have never had this issue before but I’ve now come back to UE4 after a couple of years and I can’t seem to get action mappings to work in any way. They won’t fire with my player controller or on my pawn after I’ve enabled input. Any help would be much appreciated.

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How are you testing this in the player controller? Are you using the player controller you’re testing this with?

pawn

Is it possessed?

Are you using this action mapping anywhere else? Input consumption is a thing.