Bag world events in Llunden (Assassin's Creed: Valhalla)

Hello world.

World event: You must first dive under the water to the sunken ship and search 2 chests, after - go back to the Nps and she will say that you need to get a necklace, which is in the fish. Going to fish - caught, given a necklace
I return - there is no nps, which need to pass the quest, and therefore the world event is not counted

Did anyone have a bug? And how to decide?