On Deadly Wings Bug

While doing on deadly wings and going to meet Lucanis, the door is open but the marker stays above it and everything is still locked after beating the qunari. I explored this area prior to this quest and think that’s the issue for me. It’s been so long since I did and can’t go back before. Feel I’m being punished by the game for exploring. I’m doing a crows run and refuse to do the tevinter mission instead since it wouldn’t make sense. Please fix. This basically locks me out of the whole game. The doors are all blocked off and nothing else happens.