Stuck following the Titanic Games rpg tutorial

I’m at 11:12 (Unreal Engine 4 - Inventory System Part 1 (Part 11) - YouTube)

I’ve rewatched the videos several times but I can’t figure out what is wrong.

I’ve noticed that in the tutorial it sais Pickup -> Target “Object reference” but my target sais “BP Base Interactable Reference” maybe that’s the problem but I still don’t know how to fix this.

I found the problem:

I used the wrong Pickup (red) I should have used the one (green)