I has resolved it.
The 'CONTROLRIG_API ’ macro is not good because it’s DLL_IMPORT, I think.
The build has been success when I changed the macro to my own project.
struct CONTROLRIG_API FRigUnit_CustomNode : public FRigUnit {
to
struct MYPROJECT_API FRigUnit_CustomNode : public FRigUnit {
I can add a custom node because of you! thank you so much!