This is my GameInstance class.

void UTLPGameInstance::ConnectToGameSparksService()
{
	GSObj = NewObject<UGameSparksObject>(this, UGameSparksObject::StaticClass());
	GSMessageListener = NewObject<UGSMessageListenersObject>(this, UGSMessageListenersObject::StaticClass());
	GSObj->Disconnect();
	GSObj->OnGameSparksAvailableDelegate.AddDynamic(this, &UTLPGameInstance::OnGameSparksAvailable);
	GSObj->Connect("m368503MEbSG", "YUZNsgNGuTZyXjCVeYnRR0PTlj7FKqxs", true, false);
}

void UTLPGameInstance::SetGameSparksServiceInterface(IGameSparksServiceInterface * GameSparksServiceInterface)
{
	this->GameSparksServiceInterface = GameSparksServiceInterface;
}

void UTLPGameInstance::OnGameSparksAvailable(bool available) {

	if (!ensure(GameSparksServiceInterface != nullptr)) {
		return;
	}
	GameSparksServiceInterface->ConnectedToGameSparks(available);
}
 

In my widget class..

bool UBoardingMenuWidget::Initialize() {
	bool success = Super::Initialize();


UTLPGameInstance * TLPGameInstance = Cast<UTLPGameInstance>(GetWorld()->GetGameInstance());
	if (TLPGameInstance != NULL) {
		TLPGameInstance->SetGameSparksServiceInterface(this);
		TLPGameInstance->ConnectToGameSparksService();
	}
}

 This code is working fine Editor, PC build , but its crashing on Android Build.

If I comment this line below, then android build works fine.

//TLPGameInstance->ConnectToGameSparksService();

This is the log from UE4.

LogPlayLevel: 09-05 00:34:44.660 32241 32279 D UE4 : [2018.09.04-19.04.44:660][ 0]UGameSparksModuleLog: Warning: GameSparks::StartupModule