: Ensure condition failed: bIsValidObjectReference [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp] [Line: 3389] D/UE4 : Invalid object referenced by the PersistentFrame: 0x0000007f51f82040 (Blueprint object: NULL, ReferencingProperty: ObjectProperty /Script/PlayFab.PlayFabLoginResultCommon:AuthenticationContext, Instance: AnalyticsManager_C /Game/Levels/TutorialMap.TutorialMap:PersistentLevel.AnalyticsManager_C_2147482113, Address: 0x0000007f2719a368) - If you hav e a reliable repro for this, please contact the development team with it. D/UE4 : [2020.05.20-13.45.28:496][961]LogStats: FPlatformStackWalk::StackWalkAndDump - 0.434 s D/UE4 : [2020.05.20-13.45.28:496][961]LogOutputDevice: Error: === Handled ensure: === D/UE4 : [2020.05.20-13.45.28:497][961]LogOutputDevice: Error: D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: Ensure condition failed: bIsValidObjectReference [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp] [Line: 3389] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: Invalid object referenced by the PersistentFrame: 0x0000007f51f82040 (Blueprint object: NULL, ReferencingProperty: ObjectProperty /Script/PlayFab.PlayFabLoginResultCommon:AuthenticationContext, Instance: AnalyticsManager_C /Game/Levels/TutorialMap.TutorialMap:PersistentLevel.AnalyticsManager_C _2147482113, Address: 0x0000007f2719a368) - If you have a reliable repro for this, please contact the development team with it. D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: Stack: D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F561D5EA4 libUE4.so(0x000000000A977EA4)!FPersistentFrameCollectorArchive::operator<<(UObject*&)::{lambda()#1}::operator()() const [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F5252D65C libUE4.so(0x0000000006CCF65C)!FPersistentFrameCollectorArchive::operator<<(UObject*&) [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F524A5FBC libUE4.so(0x0000000006C47FBC)!UObjectProperty::SerializeItem(FStructuredArchiveSlot, void*, void const*) const [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F52384688 libUE4.so(0x0000000006B26688)!UProperty::SerializeBinProperty(FStructuredArchiveSlot, void*, int) [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F52384580 libUE4.so(0x0000000006B26580)!UStruct::SerializeBin(FStructuredArchiveSlot, void*) const [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F5238C15C libUE4.so(0x0000000006B2E15C)!UScriptStruct::SerializeItem(FStructuredArchiveSlot, void*, void const*) [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F524AE330 libUE4.so(0x0000000006C50330)!UStructProperty::SerializeItem(FStructuredArchiveSlot, void*, void const*) const [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F52384688 libUE4.so(0x0000000006B26688)!UProperty::SerializeBinProperty(FStructuredArchiveSlot, void*, int) [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F52384580 libUE4.so(0x0000000006B26580)!UStruct::SerializeBin(FStructuredArchiveSlot, void*) const [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F5416CD3C libUE4.so(0x000000000890ED3C)!UBlueprintGeneratedClass::AddReferencedObjectsInUbergraphFrame(UObject*, FReferenceCollector&) [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F52420958 libUE4.so(0x0000000006BC2958)!TFastReferenceCollector, FGCCollector, FGCArrayPool, false>::ProcessObjectArray(FGCArrayStruct&, TRefCountPtr const&) [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F5241F350 libUE4.so(0x0000000006BC1350)!TFastReferenceCollector, FGCCollector, FGCArrayPool, false>::FCollectorTaskQueue::DoTask() [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F5241EC08 libUE4.so(0x0000000006BC0C08)!TGraphTask, FGCCollector, FGCArrayPool, false>::FCollectorTaskProcessorTask>::ExecuteTask(TArray >&, ENamedThreads::Type) [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F51ED89B0 libUE4.so(0x000000000667A9B0)!FTaskThreadAnyThread::ProcessTasks() [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F51ED7A84 libUE4.so(0x0000000006679A84)!FTaskThreadAnyThread::ProcessTasksUntilQuit(int) [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F51ED7928 libUE4.so(0x0000000006679928)!FTaskThreadAnyThread::Run() [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F51F72C74 libUE4.so(0x0000000006714C74)!FRunnableThreadPThread::Run() [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F51ED5E64 libUE4.so(0x0000000006677E64)!FRunnableThreadPThread::_ThreadProc(void*) [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F7DCBD1A8 libc.so(0x00000000000681A8)![Unknown]() [] D/UE4 : [2020.05.20-13.45.28:498][961]LogOutputDevice: Error: [Callstack] 0x0000007F7DC72B84 libc.so(0x000000000001DB84)![Unknown]() [] D/UE4 : [2020.05.20-13.45.28:499][961]LogOutputDevice: Error: D/UE4 : [2020.05.20-13.45.28:500][961]LogStats: SubmitErrorReport - 0.001 s D/UE4 : [2020.05.20-13.45.28:500][961]LogStats: SendNewReport - 0.000 s D/UE4 : [2020.05.20-13.45.28:500][961]LogStats: FDebug::EnsureFailed - 0.441 s D/UE4 : [2020.05.20-13.45.28:501][961]LogUObjectBase: Error: Object flags are invalid or either Class or Outer is misaligned D/UE4 : Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/GarbageCollection.cpp] [Line: 885] D/UE4 : Invalid object in GC: 0x0000007f51f82040, ReferencingObject: AnalyticsManager_C /Game/Levels/TutorialMap.TutorialMap:PersistentLevel.AnalyticsManager_C_2147482113, ReferencingObjectClass: BlueprintGeneratedClass /Game/Blueprints/Controller/AnalyticsManager.AnalyticsManager_C, Property Name: AuthenticationContext, Offset: 608, TokenIndex: 22 D/UE4 : [2020.05.20-13.45.28:529][961]Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/GarbageCollection.cpp] [Line: 885] D/UE4 : Invalid object in GC: 0x0000007f51f82040, ReferencingObject: AnalyticsManager_C /Game/Levels/TutorialMap.TutorialMap:PersistentLevel.AnalyticsManager_C_2147482113, ReferencingObjectClass: BlueprintGeneratedClass /Game/Blueprints/Controller/AnalyticsManager.AnalyticsManager_C, Property Name: AuthenticationContext, Offset: 608, TokenIndex: 22 D/UE4 : 0x0000007F52420F2C libUE4.so(0x0000000006BC2F2C)!TFastReferenceCollector, FGCCollector, FGCArrayPool, false>::ProcessObjectArray(FGCArrayStruct&, TRefCountPtr const&) [] D/UE4 : 0x0000007F5241F350 libUE4.so(0x0000000006BC1350)!TFastReferenceCollector, FGCCollector, FGCArrayPool, false>::FCollectorTaskQueue::DoTask() [] D/UE4 : 0x0000007F5241EC08 libUE4.so(0x0000000006BC0C08)!TGraphTask, FGCCollector, FGCArrayPool, false>::FCollectorTaskProcessorTask>::ExecuteTask(TArray >&, ENamedThreads::Type) [] D/UE4 : 0x0000007F51ED89B0 libUE4.so(0x000000000667A9B0)!FTaskThreadAnyThread::ProcessTasks() [] D/UE4 : 0x0000007F51ED7A84 libUE4.so(0x0000000006679A84)!FTaskThreadAnyThread::ProcessTasksUntilQuit(int) [] D/UE4 : 0x0000007F51ED7928 libUE4.so(0x0000000006679928)!FTaskThreadAnyThread::Run() [] D/UE4 : 0x0000007F51F72C74 libUE4.so(0x0000000006714C74)!FRunnableThreadPThread::Run() [] D/UE4 : 0x0000007F51ED5E64 libUE4.so(0x0000000006677E64)!FRunnableThreadPThread::_ThreadProc(void*) [] D/UE4 : 0x0000007F7DCBD1A8 libc.so(0x00000000000681A8)![Unknown]() [] D/UE4 : 0x0000007F7DC72B84 libc.so(0x000000000001DB84)![Unknown]() [] D/UE4 : D/UE4 : D/UE4 : D/UE4 : [2020.05.20-13.45.28:529][961]LogAndroid: Error: === Critical error: === D/UE4 : [2020.05.20-13.45.28:529][961]LogAndroid: Error: D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/GarbageCollection.cpp] [Line: 885] D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: Invalid object in GC: 0x0000007f51f82040, ReferencingObject: AnalyticsManager_C /Game/Levels/TutorialMap.TutorialMap:PersistentLevel.AnalyticsManager_C_2147482113, ReferencingObjectClass: BlueprintGeneratedClass /Game/Blueprints/Controller/AnalyticsManager.AnalyticsManager_C, Property Name: Authent icationContext, Offset: 608, TokenIndex: 22 D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: [Callstack] 0x0000007F52420F2C libUE4.so(0x0000000006BC2F2C)!TFastReferenceCollector, FGCCollector, FGCArrayPool, false>::ProcessObjectArray(FGCArrayStruct&, TRefCountPtr const&) [] D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: [Callstack] 0x0000007F5241F350 libUE4.so(0x0000000006BC1350)!TFastReferenceCollector, FGCCollector, FGCArrayPool, false>::FCollectorTaskQueue::DoTask() [] D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: [Callstack] 0x0000007F5241EC08 libUE4.so(0x0000000006BC0C08)!TGraphTask, FGCCollector, FGCArrayPool, false>::FCollectorTaskProcessorTask>::ExecuteTask(TArray >&, ENamedThreads::Type) [] D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: [Callstack] 0x0000007F51ED89B0 libUE4.so(0x000000000667A9B0)!FTaskThreadAnyThread::ProcessTasks() [] D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: [Callstack] 0x0000007F51ED7A84 libUE4.so(0x0000000006679A84)!FTaskThreadAnyThread::ProcessTasksUntilQuit(int) [] D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: [Callstack] 0x0000007F51ED7928 libUE4.so(0x0000000006679928)!FTaskThreadAnyThread::Run() [] D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: [Callstack] 0x0000007F51F72C74 libUE4.so(0x0000000006714C74)!FRunnableThreadPThread::Run() [] D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: [Callstack] 0x0000007F51ED5E64 libUE4.so(0x0000000006677E64)!FRunnableThreadPThread::_ThreadProc(void*) [] D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: [Callstack] 0x0000007F7DCBD1A8 libc.so(0x00000000000681A8)![Unknown]() [] D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: [Callstack] 0x0000007F7DC72B84 libc.so(0x000000000001DB84)![Unknown]() [] D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: D/UE4 : [2020.05.20-13.45.28:530][961]LogAndroid: Error: D/UE4 : [2020.05.20-13.45.28:534][961]LogAndroid: FAndroidMisc::RequestExit(1)