Assertion Failed Crash: SerializeNum

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Assertion failed: SerializeNum >= 0 [File:D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Containers/Array.h] [Line: 1152]

UE4Editor_Core
UE4Editor_Core
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_DerivedDataCache
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Engine
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

2

Same fail.
somebodie knows how to fix it?