I am stuck on this quest step 'The Nightmare Cometh' on my titan. It says I need to 'Defeat the three remaining nightmare bosses to collect their essences (fear, isolation, pride) but I've already defeated all the bosses that it put on my map. I have 1/3 pieces of armor created, i checked Nothing in post master. i Cleansed everything but can't even grab new essences from the lantern as it say i already have it tho i don't have it in my quest ..... can't continue forward on the story because I need the three armor pieces... any ideas or any help bungie ?!