My UE4 project crashed when I try to put my created class into viewport

[anonymous_user_ae3d98ae]

Snake.h file

UPROPERTY(EditAnywhere, Category = "Static Mesh")
UStaticMesh * StaticMesh;

Snake.cpp file

StaticMesh = CreateDefaultSubobject<UStaticMesh>(TEXT("Static Mesh"));

I want to set static mesh from Blueprint.