Added simple UInterface to ShooterGame, now getting linker error

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I had this issue, too. I could not find the cause of this, but I have a workaround. Add the following code:

 UINTERFACE()
 class UInterfacePickupable : public UInterface
 {
     GENERATED_UINTERFACE_BODY()
 };
// insert this:
inline UInterfacePickupable::UInterfacePickupable(const class FObjectInitializer& ObjectInitializer)
    : Super(ObjectInitializer)
{}
 
 class IInterfacePickupable
 {
     GENERATED_IINTERFACE_BODY()
 };

I believe this code should be automatically generated, and I suspect this is a bug in the UHT. Maybe you should move this question to the bug reports section to get epics attention.

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