I added that, and the error wording has changed a bit, but I am still getting a linking error.
error LNK2019: unresolved external symbol "public: static float __cdecl UDevotionBlueprintFunctionLibrary::GetVectorDistance(struct FVector,struct FVector)" (?GetVectorDistance@UDevotionBlueprintFunctionLibrary@@SAMUFVector@@0@Z) referenced in function "public: void __cdecl UDevotionBlueprintFunctionLibrary::execGetVectorDistance(struct FFrame &,void * const)" (?execGetVectorDistance@UDevotionBlueprintFunctionLibrary@@QEAAXAEAUFFrame@@QEAX@Z) C:\Users\cheap_000\Projects\OffTheGrid\Intermediate\ProjectFiles\DevotionBlueprintFunctionLibrary.cpp.obj OffTheGrid