Fatal Error with Packaged Game In 4.19

When I package my game,it has this promble:

256107-微信图片-20181010142921.png

The clipboard’s log:

Fatal error: [File:D:\Build\++UE4+Release-4.19+Compile\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading.cpp] [Line: 1384] 
No outstanding IO, no nodes in the queue, yet we still have 23 'AddedNodes' in the graph (with 1 boot nodes).


0x000000002FD6A388 KERNELBASE.dll!UnknownFunction []
0x000000007E6FE1C0 PkgBugTest.exe!UnknownFunction []
0x000000007E29878B PkgBugTest.exe!UnknownFunction []
0x000000007DFA1038 PkgBugTest.exe!UnknownFunction []
0x000000007E5DAC32 PkgBugTest.exe!UnknownFunction []
0x000000007E5D9724 PkgBugTest.exe!UnknownFunction []
0x000000007E635C04 PkgBugTest.exe!UnknownFunction []
0x000000007E5FB635 PkgBugTest.exe!UnknownFunction []
0x000000007E402F1D PkgBugTest.exe!UnknownFunction []
0x000000007E4029E6 PkgBugTest.exe!UnknownFunction []
0x000000007E41BD9B PkgBugTest.exe!UnknownFunction []
0x000000007E426DA2 PkgBugTest.exe!UnknownFunction []
0x000000007E4262B3 PkgBugTest.exe!UnknownFunction []
0x000000007E425D79 PkgBugTest.exe!UnknownFunction []
0x000000007DF68684 PkgBugTest.exe!UnknownFunction []
0x000000007DF67E40 PkgBugTest.exe!UnknownFunction []
0x000000007E4DFE35 PkgBugTest.exe!UnknownFunction []
0x000000007E429C80 PkgBugTest.exe!UnknownFunction []
0x000000007E409EA5 PkgBugTest.exe!UnknownFunction []
0x000000007DF85CBC PkgBugTest.exe!UnknownFunction []
0x000000007DF7E76A PkgBugTest.exe!UnknownFunction []
0x000000007DF7E9DA PkgBugTest.exe!UnknownFunction []
0x000000007DF8B816 PkgBugTest.exe!UnknownFunction []
0x000000008174191A PkgBugTest.exe!UnknownFunction []
0x0000000033883034 KERNEL32.DLL!UnknownFunction []
0x00000000339D1461 ntdll.dll!UnknownFunction []
0x00000000339D1461 ntdll.dll!UnknownFunction []

Bug recurrence:

1.Create a Thirdperson Example Project whit c++:

2.Add function in GameMode ,It is look like this:

.h

    	UFUNCTION(BlueprintCallable, meta = (WorldContext = "WorldContextObject"), Category = "CLCProjectGameMode")
    	static UUserWidget* GetHintPropsWidget(const UObject* WorldContextObject);

.cpp

UUserWidget * APkgBugTestGameMode::GetHintPropsWidget(const UObject * WorldContextObject)
{
	UUserWidget *HintWidget = nullptr;
	return HintWidget;
}

3.Create Wdiget Blueprint:

In Blueprint:

256108-微信图片-20181010143657.png

4.Add create widget function in character:

5.Package this project,and exec the Packaged game,this issue will appear.

Hello,

We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://epicsupport.force.com/unrealengine/s/

Thanks