Pickup.cpp(25): [C2039] 'GetLifetimeReplicatedProps': is not a member of '`global namespace''

Development Programming & Scripting C++
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1

hello i am using UE4.25.4 and trying to make a pickup based on StaticMeshActor . I’m trying networking. Below is my code

pickup.h
// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "Engine/StaticMeshActor.h"
#include "Pickup.generated.h"

/**
 * 
 */
UCLASS()
class BATTERYWARS_API APickup : public AStaticMeshActor
{
	GENERATED_BODY()

public:
	// set the default values
	APickup();

	// networking 
	virtual void GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeProps) const override;

	// returns pickup state
	UFUNCTION(BlueprintPure, Category = "Pickup")
	bool IsActive();

	// allow other class to change pickup state
	UFUNCTION(BlueprintCallable, Category = "Pickup")
	void SetActive(bool NewPickupState);

// pickup is active or not
protected:
	UPROPERTY(ReplicatedUsing = OnRep_IsActive)
	bool bIsActive;

	// whenever bIsActive updated
	UFUNCTION()
	virtual void OnRep_IsActive();
};

pickup.cpp

// Fill out your copyright notice in the Description page of Project Settings.


#include "Pickup.h"
#include "Net/UnrealNetwork.h"

#include "GeneratedCodeHelpers.h"

APickup::APickup()
{
	// tell engine to replicate this actor
	bReplicates = true;

	// pickups do not need tick every frame
	PrimaryActorTick.bCanEverTick = false;

	if(GetLocalRole() == ROLE_Authority)
	{
		bIsActive = true;
	}
}

void APickup::GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeProps) const
{
	Super()::GetLifetimeReplicatedProps(OutLifetimeProps);
	
	DOREPLIFETIME(APickup, bIsActive);
}


bool APickup::IsActive()
{
	return bIsActive;
}

void APickup::SetActive(bool NewPickupState)
{
	if(GetLocalRole() == ROLE_Authority)
	{
		bIsActive = NewPickupState;
	}
}

void APickup::OnRep_IsActive()
{
	
}

Error : Pickup.cpp(25): [C2039] ‘GetLifetimeReplicatedProps’: is not a member of ‘`global namespace’'
Pickup.cpp(25): [C2146] syntax error: missing ‘;’ before identifier 'GetLifetimeReplicatedProps’