Problem adding widget to viewport

Hello, i was trying to add my widget to the viewport and get the following error, All seem to work but i dont see the widget in screen, i have verified if the widget is successfully add with “isInViewport” and it return true.

Cpp



#include "GameInstance_Global.h"
#include "Blueprint/UserWidget.h"
#include "Engine/GameEngine.h"




void UGameInstance_Global::Init() {

    Super::Init();

    FCoreUObjectDelegates::PreLoadMap.AddUObject(this,&UGameInstance_Global::PreLoadMap);
    FCoreUObjectDelegates::PostLoadMapWithWorld.AddUObject(this,&UGameInstance_Global::PostLoadMap);

}

void UGameInstance_Global::PreLoadMap(const FString & MapName) {

    GEngine->AddOnScreenDebugMessage(-1, 15.0f, FColor::Yellow, TEXT("Loading map"));

    LoadingScreen = CreateWidget<UUserWidget>(this, LoadingWidget);
    if (LoadingScreen) {


        GEngine->AddOnScreenDebugMessage(-1, 15.0f, FColor::Yellow, TEXT("Created"));
        LoadingScreen->AddToViewport();
        if (LoadingScreen->IsInViewport()) {
            GEngine->AddOnScreenDebugMessage(-1, 15.0f, FColor::Yellow, TEXT("Added To Viewport"));
        }

    }



}


void UGameInstance_Global::PostLoadMap(UWorld* world) {




}



.H



#include "CoreMinimal.h"
#include "Engine/GameInstance.h"
#include "GameInstance_Global.generated.h"

/**
 * 
 */
UCLASS()
class MULTIPLAYERGAME_API UGameInstance_Global : public UGameInstance
{
    GENERATED_BODY()

        virtual void Init() override;
        UFUNCTION()
        virtual void PreLoadMap(const FString & MapName);
        UFUNCTION()
        virtual void PostLoadMap(UWorld* world);



        public:


        UUserWidget * LoadingScreen;

        UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Widget")
        TSubclassOf<class UUserWidget> LoadingWidget;





};



And of course i selected my widget in the gameinstance blueprint

Maybe you just can’t see it, try with a number:
AddToViewport(1);