ERROR: UBT ERROR: Failed to produce item，why?

Development Programming & Scripting Blueprint
1

ParallelExecutor.ExecuteActions: [614/617] Module.Slate.2_of_5.cpp
ParallelExecutor.ExecuteActions: [615/617] Module.Engine.38_of_41.cpp
ParallelExecutor.ExecuteActions: [616/617] Module.NativizedAssets.1_of_65.cpp
Log.WriteException: ==============================================================================
Log.WriteException: ERROR: UBT ERROR: Failed to produce item: F:\Kxd421\Binaries\Win64\CleanThirdPerson.exe
Log.WriteException: (see E:\UnrealEngine-release\Engine\Programs\AutomationTool\Saved\Logs\UBT-CleanThirdPerson-Win64-Development.txt for full exception trace)
Log.WriteException:
Log.WriteException: BuildException: UBT ERROR: Failed to produce item: F:\Kxd421\Binaries\Win64\CleanThirdPerson.exe
Log.WriteException: 在 UnrealBuildTool.ActionGraph.ExecuteActions(BuildConfiguration BuildConfiguration, List`1 ActionsToExecute, String& ExecutorName, String TargetInfoForTelemetry, EHotReload HotReload) 位置 E:\UnrealEngine-release\Engine\Source\Programs\UnrealBuildTool\System\ActionGraph.cs:行号 507
Log.WriteException: 在 UnrealBuildTool.UnrealBuildTool.RunUBT(BuildConfiguration BuildConfiguration, String] Arguments, FileReference ProjectFile, Boolean bCatchExceptions) 位置 E:\UnrealEngine-release\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:行号 1699
Log.WriteException: ==============================================================================
UnrealBuildTool.RunUBT: Total build time: 2808.77 seconds (Parallel executor: 0.00 seconds)

2

ParallelExecutor.ExecuteActions: [77/617] Module.NativizedAssets.9_of_65.cpp
ParallelExecutor.ExecuteActions: [78/617] Module.NativizedAssets.7_of_65.cpp
ParallelExecutor.ExecuteActions: E:\UnrealEngine-release\Engine\Source\Runtime\Engine\Public\GeneratedCodeHelpers.h(415): error C2664: ��int32 &TMapBase<KeyType,ValueType,SetAllocator,KeyFuncs>::Add(TTuple<KeyType,ValueType> &&)��: �޷������� 1 �ӡ�const uint8��ת��Ϊ��const E__E_MatchmakingMaps__pf &��
ParallelExecutor.ExecuteActions: with
ParallelExecutor.ExecuteActions:
ParallelExecutor.ExecuteActions: KeyType=E__E_MatchmakingMaps__pf,
ParallelExecutor.ExecuteActions: ValueType=int32,
ParallelExecutor.ExecuteActions: SetAllocator=FDefaultSetAllocator,
ParallelExecutor.ExecuteActions: KeyFuncs=TDefaultMapHashableKeyFuncs<E__E_MatchmakingMaps__pf,int32,false>
ParallelExecutor.ExecuteActions: ]
ParallelExecutor.ExecuteActions: E:\UnrealEngine-release\Engine\Source\Runtime\Engine\Public\GeneratedCodeHelpers.h(415): note: ԭ������: �޷��ӡ�const uint8��ת��Ϊ��const E__E_MatchmakingMaps__pf��
ParallelExecutor.ExecuteActions: E:\UnrealEngine-release\Engine\Source\Runtime\Engine\Public\GeneratedCodeHelpers.h(415): note: ת��Ϊö������Ҫ����ʽת��(static_cast��C ��ʽת��������ʽת��)
ParallelExecutor.ExecuteActions: F:\Kxd421\Intermediate\Plugins\NativizedAssets\Windows\Game\Source\NativizedAssets\Private\BP_MatchmakingWebPanel__pf2443755060.cpp(1912): note: �μ������ڱ���ĺ��� ģ�� ʵ������void FCustomThunkTemplates::Map_Add<E__E_MatchmakingMaps__pf,int32,uint8,int32>(TMap<E__E_MatchmakingMaps__pf,int32,FDefaultSetAllocator,TDefaultMapHashableKeyFuncs<KeyType,ValueType,false>> &,const V &,const W &)��������
ParallelExecutor.ExecuteActions: with
ParallelExecutor.ExecuteActions:
ParallelExecutor.ExecuteActions: KeyType=E__E_MatchmakingMaps__pf,
ParallelExecutor.ExecuteActions: ValueType=int32,
ParallelExecutor.ExecuteActions: V=uint8,
ParallelExecutor.ExecuteActions: W=int32
ParallelExecutor.ExecuteActions: ]
ParallelExecutor.ExecuteActions: [79/617] Module.NativizedAssets.15_of_65.cpp
ParallelExecutor.ExecuteActions: [80/617] Module.NativizedAssets.gen.23_of_75.cpp

3

Not much to see here. you should upload the full log file though, might have more details:

Log.WriteException: (see E:\UnrealEngine-release\Engine\Programs\AutomationTool\Saved\Logs\UBT-CleanThirdPerson-Win64-Development.txt for full exception trace)