[UE4]获取GameInstance变量时Crash(Cast Failed)

代码（在GameMode::BeginPlay()中调用）： void AReleaseGameMode::SpawnMainRole() { UE_LOG(LogTemp, Log, TEXT("SpawnMainRole 11111 ")); if (UMyGameInstance* WSGI = Cast<UMyGameInstance>(GetWorld()->GetGameInstance())) { UE_LOG(LogTemp, Log, TEXT("SpawnMainRole 22222")); if (ABaseCharacter* BC = GetWorld()->SpawnActor<ABaseCharacter>(WSGI->CurrentCharacter, MainRoleSpawnLoc_, MainRoleSpawnRot_)) { UE_LOG(LogTemp, Log, TEXT("SpawnMainRole 333333 ")); BC->SpawnDefaultController(); } } } 崩溃日志： [2018.01.12-16.4...