replying to boost comment. I have the same error along with these packaging errors
LogProperty: Error: FStructProperty::Serialize Loading: Property ‘StructProperty /Game/PostCity/Blueprints/Buildings/Parent/BP_P_Building.BP_P_Building_C:SpawnedHISMData.SpawnedHISMData’. Unknown structure.
LogProperty: Error: FStructProperty::Serialize Loading: Property ‘StructProperty /Game/PostCity/Blueprints/Buildings/Parent/BP_P_Building.BP_P_Building_C:LoadFromLevelData:CallFunc_Array_Get_Item_3’. Unknown structure.
LogFeaturePack: Error: Error in Feature pack E:/Unreal Engine/engine/UE_5.0/FeaturePacks/TP_VirtualRealityBP.upack. Failed to parse manifest: Invalid Json Token. Line: 43 Ch: 4
PackagingResults: Error: FStructProperty::Serialize Loading: Property ‘StructProperty /Game/PostCity/Blueprints/Buildings/Parent/BP_P_Building.BP_P_Building_C:SpawnedHISMData.SpawnedHISMData’. Unknown structure.
PackagingResults: Error: FStructProperty::Serialize Loading: Property ‘StructProperty /Game/PostCity/Blueprints/Buildings/Parent/BP_P_Building.BP_P_Building_C:LoadFromLevelData:CallFunc_Array_Get_Item_3’. Unknown structure.
PackagingResults: Error: begin: stack for UAT
PackagingResults: Error: === Handled ensure: ===
PackagingResults: Error: Ensure condition failed: BuildFaces(Pool, InVertices, ConflictV, HorizonEdges, FacesToDelete, NewFaces) [File:D:\build++UE5\Sync\Engine\Source\Runtime\Experimental\Chaos\Public\Chaos\CollisionConvexMesh.h] [Line: 1053]
PackagingResults: Error: Stack:
PackagingResults: Error: [Callstack] 0x00007ff9e95b31ce UnrealEditor-Engine.dll!Chaos::FConvexBuilder::BuildConvexHull() [D:\build++UE5\Sync\Engine\Source\Runtime\Experimental\Chaos\Public\Chaos\CollisionConvexMesh.h:310]
PackagingResults: Error: [Callstack] 0x00007ff9e95cae6a UnrealEditor-Engine.dll!FKConvexElem::GetChaosConvexIndices() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\PhysicsEngine\BodySetup.cpp:2043]
PackagingResults: Error: [Callstack] 0x00007ff9e95eb57a UnrealEditor-Engine.dll!UBodySetup::Serialize() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\PhysicsEngine\BodySetup.cpp:1144]
PackagingResults: Error: [Callstack] 0x00007ff9ed4eebb6 UnrealEditor-CoreUObject.dll!FLinkerLoad::Preload() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp:4388]
PackagingResults: Error: [Callstack] 0x00007ff9ed694b6c UnrealEditor-CoreUObject.dll!EndLoad() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1658]
PackagingResults: Error: [Callstack] 0x00007ff9ed6804a2 UnrealEditor-CoreUObject.dll!<lambda_c8710bcd35c9e247c18bb173ed0f9483>::operator()() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1264]
PackagingResults: Error: [Callstack] 0x00007ff9ed6a9357 UnrealEditor-CoreUObject.dll!LoadPackageInternal() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1366]
PackagingResults: Error: [Callstack] 0x00007ff9ed6a7c9a UnrealEditor-CoreUObject.dll!LoadPackage() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1520]
PackagingResults: Error: [Callstack] 0x00007ff9ed6a81f0 UnrealEditor-CoreUObject.dll!LoadPackage() [D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp:1500]
PackagingResults: Error: [Callstack] 0x00007ff9e9e4bc48 UnrealEditor-Engine.dll!FWorldPartitionLevelHelper::LoadActors() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionLevelHelper.cpp:335]
PackagingResults: Error: [Callstack] 0x00007ff9e9e4c58b UnrealEditor-Engine.dll!UWorldPartitionRuntimeLevelStreamingCell::LoadActorsForCook() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionRuntimeLevelStreamingCell.cpp:148]
PackagingResults: Error: [Callstack] 0x00007ff9e9e4e1d3 UnrealEditor-Engine.dll!UWorldPartitionRuntimeLevelStreamingCell::MoveAlwaysLoadedContentToPersistentLevel() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionRuntimeLevelStreamingCell.cpp:158]
PackagingResults: Error: [Callstack] 0x00007ff9e9e24246 UnrealEditor-Engine.dll!UWorldPartitionRuntimeSpatialHash::CreateStreamingGrid() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionRuntimeSpatialHash.cpp:1019]
PackagingResults: Error: [Callstack] 0x00007ff9e9e3a074 UnrealEditor-Engine.dll!UWorldPartitionRuntimeSpatialHash::GenerateStreaming() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionRuntimeSpatialHash.cpp:822]
PackagingResults: Error: [Callstack] 0x00007ff9e9e39270 UnrealEditor-Engine.dll!UWorldPartition::GenerateStreaming() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionStreamingGeneration.cpp:570]
PackagingResults: Error: [Callstack] 0x00007ff9e9e3f7be UnrealEditor-Engine.dll!FWorldPartitionCookPackageSplitter::GetGenerateList() [D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartitionCookPackageSplitter.cpp:90]
PackagingResults: Error: [Callstack] 0x00007ff9e4c61264 UnrealEditor-UnrealEd.dll!UE:
:FGeneratorPackage::TryGenerateList() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Cooker\CookPackageData.cpp:1148]
PackagingResults: Error: [Callstack] 0x00007ff9e4c597af UnrealEditor-UnrealEd.dll!UCookOnTheFlyServer::SplitPackage() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\CookOnTheFlyServer.cpp:2293]
PackagingResults: Error: [Callstack] 0x00007ff9e4bd3fea UnrealEditor-UnrealEd.dll!UCookOnTheFlyServer::BeginPrepareSave() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\CookOnTheFlyServer.cpp:2526]
PackagingResults: Error: [Callstack] 0x00007ff9e4c3add7 UnrealEditor-UnrealEd.dll!UCookOnTheFlyServer::PumpSaves() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\CookOnTheFlyServer.cpp:3097]
PackagingResults: Error: [Callstack] 0x00007ff9e4c5f4e0 UnrealEditor-UnrealEd.dll!UCookOnTheFlyServer::TickCookOnTheSide() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\CookOnTheFlyServer.cpp:1259]
PackagingResults: Error: [Callstack] 0x00007ff9e4a6b1bd UnrealEditor-UnrealEd.dll!UCookCommandlet::CookByTheBook() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Commandlets\CookCommandlet.cpp:1048]
PackagingResults: Error: [Callstack] 0x00007ff9e4a8cb5c UnrealEditor-UnrealEd.dll!UCookCommandlet::Main() [D:\build++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Commandlets\CookCommandlet.cpp:685]
PackagingResults: Error: [Callstack] 0x00007ff6eb40948e UnrealEditor-Cmd.exe!FEngineLoop::PreInitPostStartupScreen() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:3659]
PackagingResults: Error: [Callstack] 0x00007ff6eb400bbd UnrealEditor-Cmd.exe!GuardedMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:137]
PackagingResults: Error: [Callstack] 0x00007ff6eb400e8a UnrealEditor-Cmd.exe!GuardedMainWrapper() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:147]
PackagingResults: Error: [Callstack] 0x00007ff6eb403c4d UnrealEditor-Cmd.exe!LaunchWindowsStartup() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:283]
PackagingResults: Error: [Callstack] 0x00007ff6eb415564 UnrealEditor-Cmd.exe!WinMain() [D:\build++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:330]
PackagingResults: Error: [Callstack] 0x00007ff6eb41788a UnrealEditor-Cmd.exe!__scrt_common_main_seh() [d:\a01_work\6\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
PackagingResults: Error: [Callstack] 0x00007ffae73a74b4 KERNEL32.DLL!UnknownFunction []
PackagingResults: Error: [Callstack] 0x00007ffae7ea26a1 ntdll.dll!UnknownFunction []
PackagingResults: Error: end: stack for UAT
Lines drawn for ease on the eyes
Anyways if someone comes across any of this it’d be greatly appreciated