Cast PlayerState to Interface

Development Programming & Scripting
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1

I have Interface:

UINTERFACE(MinimalAPI)
class UWeaponSelectorInterface : public UInterface
{
	GENERATED_BODY()
};

class WEAPONS_API IWeaponSelectorInterface
{
	GENERATED_BODY()

public:
	virtual bool SetSelectedWeapon(const EWeapon Weapon) = 0;
	virtual EWeapon GetSelectedWeapon() = 0;
	virtual FWeaponDelegate* GetSelectedWeaponChangedDelegate() = 0;
};

Also I have my PlayerState class:

class MY_API AMyPlayerState : public APlayerState, public IWeaponSelectorInterface

When I try to cast MyPlayerState to IWeaponSelectorInterface

    const auto PlayerState = GetOwningPlayerState();

    const auto WeaponSelector = Cast<IWeaponSelectorInterface>(PlayerState);

I’m getting an error:

unresolved external symbol "private: static class UClass * __cdecl UWeaponCollectorInterface::GetPrivateStaticClass(void)" (?GetPrivateStaticClass@UWeaponCollectorInterface@@CAPEAVUClass@@XZ) referenced in function "public: enum ESlateVisibility __cdecl UCrosshairWidget::IsWeaponEnabled(enum EWeapon)const " (?IsWeaponEnabled@UCrosshairWidget@@QEBA?AW4ESlateVisibility@@W4EWeapon@@@Z)

If I use the same interface in another (not PlayerState) classes then it works fine.

Why can’t I cast PlayerState to an Interface?