Bug quest Halani gate npc frozen

Good morning, yesterday I had a problem and it is that at the end of the mission of The traitor's passage indicated to me that I should go to the Halani passage, as in act 1.
The problem is that the noc froze just before opening the second door. There was no solution, I have rebooted, I have logged out but nothing changes.
Any solution? I can't move forward!

After 13 hours the bug has disappeared, the mission has been restarted and the bot has continued on its way.
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