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Can't create a new Card class using assignment operator

Hey, I'm new to Unreal 4, and I'm trying to make a shuffling deck of cards as a first project. I'm trying to use the assignment operator to get the top card of the deck (which stores cards in a std::stack), but there's something about the assignment operator that I don't know how to fix. The code in Deck.cpp that's causing an error is:

 //Draw a card by removing the top of the deck. Return the drawn card
 ACard ADeck::Draw()
 {
     ACard drawnCard;
     drawnCard = (this->deck).top(); //Problematic line
     (this->deck).pop();
     return drawnCard;
 }

The error I get is: Severity Code Description Project File Line Suppression State Error (active) E0330 "ACard &ACard::operator=(const ACard &)" (declared at line 12 of "e:\Programs\Epic Games\Projects\Cards\Source\Cards\Card.h") is inaccessible Cards e:\Programs\Epic Games\Projects\Cards\Source\Cards\Deck.cpp 42

I haven't overloaded the operator myself, since it's not in my source code:

Card.h

 // Fill out your copyright notice in the Description page of Project Settings.
 
 #pragma once
 
 #include "CoreMinimal.h"
 #include "GameFramework/Actor.h"
 #include "Card.generated.h"
 
 UCLASS()
 class CARDS_API ACard : public AActor
 {
     GENERATED_BODY()
     
 public:    
     // Sets default values for this actor's properties
     ACard();
 
 protected:
     // Called when the game starts or when spawned
     virtual void BeginPlay() override;
 
 public:    
     // Called every frame
     //virtual void Tick(float DeltaTime) override; //Not needed, since the card remains pretty static
 
     UPROPERTY(EditAnywhere)
     int value;
     
     void SetValue(int value);
 };
 

Any help would be much appreciated

Product Version: UE 4.17
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asked Sep 17 '17 at 03:52 AM in C++ Programming

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Stormbreath
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