Allo there, Have you just handed your talisman to the statue or did you hand in your 3 charged coins to the statue?
This quest has been broken for a very long time. I just got Wish-Ender not too long ago. Go behind the statue, opposite side of where you place the talismans. There you should be able to claim it. This is pretty much the only way to get it since it seems Bungie has no interest in fixing it, or they don't know how.