l explication de ton problème est sur le site de bioware ! ! c est un bug du jeu sur certaines configs, moi même cela m as bloqué pendant 1 mois avant de trouver la réponse sur le site
c est en anglais mais voilà ce qu il faut faire
1.25 NPCs at pinnacle of Host Tower not responding ( Back to Top)
If you have reached the pinnacle of the Host Tower, and the NPCs on the other side of the locked gate do not respond and do not run their in-game cutscene, the best way to continue is by running a particular script. First, press ` or ~ to display the command console in the upper left of the screen and then type the following to enter DebugMode:
DebugMode 1
Once you have done that, prepare for a fight, and then open the command console again and type the following:
dm_runscript 2q6k_startfight
The gate should open, and the NPCs should attack you. Once they are disposed of, you can turn off DebugMode with:
DebugMode 0
Then, read your journal entry and use your Stone of Recall to report back to Aarin Gend and finish the chapter.