Nevermore IV
I’m having the same problem now too
This just came across reddit the same day this was posted. I imagine one of you is the poster. Here’s what they determined, for anyone else reading this:
The hint mentions bringing the Raven and Vision Crystal very prominently, but almost forgets to mention bringing the Tamed Spirit too. All three need to be in your inventory. If this is not your problem, then something else is up.