bug in the quest Path to Widblain (Assassin's Creed: Valhalla)

Description of the passage of the quest: A
blind Norse warrior is looking for Widblain and asks you to accompany him. The only thing he can see is the bright elves, so we take a torch in our hands and go to light the bowls of oil. The old man, originally from Zeeland, went with Guthrum on a hike through the swamps. But when he lost his eyes, he was thrown ... After you light the last bowl, accompany him on a boat to the other side of the swan path. In Sohama's hideout, we scatter enemies and say goodbye to the drang.

But after clearing Sohama, I can't talk to the drang, what should I do?
game version 1.1.2