i have this error when i pakage my project
PackagingResults: Warning: Streaming level uses short package name (None). Level will not be loaded.
PackagingResults: Error: begin: stack for UAT
PackagingResults: Error: === Critical error: ===
PackagingResults: Error: Assertion failed: LoadedWorld [File:D:\Build++UE4+Release-4.19+Compile\Sync\Engine\Source\Runtime\Engine\Private\LevelActor.cpp] [Line: 1182]
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMultiByProfile.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMultiForObjects.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceSingle.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceSingleByProfile.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceSingleForObjects.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:CapsuleTraceMulti.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:CapsuleTraceMultiByProfile.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:CapsuleTraceMultiForObjects.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:CapsuleTraceSingle.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:CapsuleTraceSingleByProfile.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:CapsuleTraceSingleForObjects.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:DrawDebugCylinder.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:LineTraceMulti.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:LineTraceMultiByProfile.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:LineTraceMultiForObjects.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:LineTraceSingle.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:LineTraceSingleByProfile.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:LineTraceSingleForObjects.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:SphereTraceMulti.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:SphereTraceMultiByProfile.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:SphereTraceMultiForObjects.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:SphereTraceSingle.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:SphereTraceSingleByProfile.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.KismetSystemLibrary:SphereTraceSingleForObjects.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or BoolProperty /Script/Landscape.LandscapeSplineConnection:End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/Engine.BatchedLine:End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/AIModule.NavLocalGridManager:FindLocalNavigationGridPath.End
LogUObjectHash: Warning: Ambiguous search, could be StructProperty /Script/Engine.KismetSystemLibrary:BoxTraceMulti.End or StructProperty /Script/FunctionalTesting.FunctionalTestUtilityLibrary:TraceChannelTestUtil.End
PackagingResults: Error: end: stack for UAT
PackagingResults: Error: Cook failed.
PackagingResults: Error: Unknown Cook Failure