Daughters Sword bugged.

I know this is probably a bit of a longshot but, I'm trying to unlock Thor's Helmet. I have all 3 of the Daughters Daggers but after I interact with the prompt having placed 2 in the statue, Evior says that 1 is missing even though I still have another 1 in my inventory.

Has anyone encountered this before or any ideas what to do? I really don't want to start a new game.

Thanks.

I had the same thing happen, did somre adventuring and completed druid dlc. Cam back to statue and it worked. Might just be a save and reload game to resolve.