CCG Toolkit | Multiplayer Card Game Framework

Does anyone know how to fix this? It’s frustrating, for some reason all these blueprints have issues and I didn’t even edit them.

As soon as Unreal lets me upload the image, I will. But it looks like this:

One or more blueprints has an unresolved compiler error, are you sure you
want to Play in Editor?
CardGamePlayerController
CardGameState
3DCard
CardGameAIController
Graveyard
Card_FunctionLibrary
etc
etc