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Link error, strange question.please help

hi, I try to use scriptplugin to generate glue function for lua, the generated code is compiled, but comfront some link error, there are about 16 functions cause error LNK2019:
int UTexture2D::Blueprint_GetSizeX(void)const
int UTexture2D::Blueprint_GetSizeY(void)const
bool UParticleSystem::ContainsEmitterType(class UClass *)
static void UKismetSystemLibrary::StackTrace(void)
void ASpotLight::SetInnerConeAngle(float)
void ASpotLight::SetOuterConeAngle(float)
void ASceneCapture2D::OnInterpToggle(bool)
void UAtmosphericFogComponent::StartPrecompute(void)
void UTimelineComponent::OnRep_Timeline(void)
class ULevelStreaming * ULevelStreaming::CreateInstance(class FString)
void ANavModifierVolume::SetAreaClass(class TSubclassOf<class UNavArea>)
void APlanarReflection::OnInterpToggle(bool)
static void UMeshVertexPainterKismetLibrary::PaintVerticesSingleColor(class UStaticMeshComponent *,struct FLinearColor const &,bool)
static void UMeshVertexPainterKismetLibrary::RemovePaintedVertices(class UStaticMeshComponent *)
static void UVisualLoggerKismetLibrary::LogText(class UObject *,class FString,class FName)
static void UVisualLoggerKismetLibrary::LogLocation(class UObject *,struct FVector,class FString,struct FLinearColor,float,class FName)

i have checked the source file of this 16 functions,they all have definition, I can’t tell the difference between this functions with the other function in the same class.
need somebody help, thanks.