How to reproduce:
Engine Version 5.1
In BeginPlay, put this bit of code:
FGoogleARCoreServicesConfig GoogleARCoreServicesConfig; GoogleARCoreServicesConfig.ARPinCloudMode = EARPinCloudMode::Enabled; bool bGoogleAREnabled = UGoogleARCoreServicesFunctionLibrary::ConfigGoogleARCoreServices(GoogleARCoreServicesConfig); FString DebugMessage = bGoogleAREnabled ? TEXT("bGoogleAREnabled") : TEXT("!bGoogleAREnabled"); GEngine->AddOnScreenDebugMessage(-1, 1, FColor::Red, DebugMessage); UARBlueprintLibrary::StartARSession(ARSessionConfig);