Pig of a crash - "Pure virtual function being called while application was running"

The problem is I really have not made any functions virtual or pure virtual, nada.

I’ve only subclassed the GameInstance, GameState, GameModeBase, Player Controller and Player State and added no other functions than what comes in these when loaded into UE. Definitely nothing is pure virtual on my end.

Ive even had the editor crash with this when Im doing nothing and just looking at my code in VS. Something else is the reason for this