Can't compile , add save game

Hi all,

yesterday i try to add a save game option for my game.
i try this tutorial in UE4 docs : https://docs.unrealengine.com/latest/INT/Gameplay/SaveGame/Code/index.html

i make a few line of code and compile. i deleting what i ever write and i can’t compile now !
have this error :
ERROR : UBT error : Failed to produce item: C:\Users\maxime\Documents\Unreal Projects\Runner\Binaries\Win64\UE4Editor-Runner.dll

1> Cumulative action seconds (8 processors): 0,00 building projects, 0,58 compiling, 0,00 creating app bundles, 0,00 generating debug info, 0,00 linking, 0,00 other

1> UBT execution time: 6,47 seconds

1>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.MakeFile.Targets(38,5): error MSB3073: The command ““C:\Program Files\Unreal Engine\4.4\Engine\Build\BatchFiles\Build.bat” RunnerEditor Win64 Development “C:\Users\maxime\Documents\Unreal Projects\Runner\Runner.uproject” -rocket” exited with code -1.

and juste before maybe more than 200 error in files that i dont change and dont know !

LockFreeVoidPointerListBase.h /
LockFreeList.h /
Stats2.h /
TaskGraphInterfaces.h /

any help ?

i deleting SaveGame.h and .cpp and can’t compile again with the same error.
maybe because i added

#include "MySaveGame.h"
#include "Kismet/GameplayStatics.h"

but even if i deleting this i cant compile. i realy need help

What is the first error?

the first error is :

PCH.Runner.Runner.h.cpp
1>C:\Program Files\Unreal Engine\4.4\Engine\Source\Runtime\Core\Public\Containers\LockFreeList.h(6): error C2504: 'FLogCategory' : base class undefined

my game is called : Runner

i following this thread to solve my problem : Compilation problem - C++ - Unreal Engine Forums