@UbiExcellent , I was able to find the problem, it came from the alliance map. I selected a region other than Vinland but I could still continue my quest in Vinland. The problem was that I had not selected Vinland in the alliance map. Yours sincerely.

Hello there, after i've killed dear Gorm. The Quest said join Olav at the eternal falls BUT i don't have any marker and i don't find it in the village. Also the quest desapeared of my quest log. I've return in the England and that's not fixed. I've reload an older save but that's still not worked. Unfortunately, i don't have save before the kill's Gorm, i'm triggered. Please, help me, i'm depressed.