I still haven't been able to. I feel like I've tried every fix. I've tried deleting the game and redownloading it multiple times, I've tried building structures beforehand, I've tried redoing the cent arc, I've tried changing the mission I'm on then reloading through the main menu. I really don't want to play through the last 30-40 hours again, I just want to get past this one quest.

I have this same problem where I can't progress in the quest. It seems like no matter what I do I go rest in the bed and then wake up with no quest marker and dag just walking around as a hostile npc. I've tried to reload earlier saves and try again, I've tried skipping through all the dialog, and none of it works. I'm on ps4 BTW, and I just hope there is some workaround or an update soon, but both seem like wishful thinking at this point.