In Val’sharah, I need to finish the final quest line “All Nightmare Long”.
An old forum post seemed to imply that this quest line was broken, because I also cannot find the quest “The Nightmare Lord”. The NPC for this quest seems to not exist, and I have no exclamation points on the map to guide me to where I should go next to finish my story progress in Val’sharah.
Tried logging out and back in, still see no exclamation points on the map, not sure where to go from here.
did you release Evelle Nightwhisper from the cage? She gives the quest.
I am boosted and completed all 3 Pathfinders (BfA, Legion, Draenor) last week. Cant find any broken quest except my heart. 
You have to let Evelle Nightwhisper out of the cage. The cave entrance is 62.94 68.41 The cage is in the corner straight back in the cave (to the left of the boss mob)
Well, do you mean completed ALL 3 pathfinders in ONE week from fresh to finish…? I’d assume that’d take more than a week…Especially Draenor unless playing 10-20 hours/day lol
Of course not. All are time gated. lol
You mean level 110 character boost Will autocomplete Legion pathfinder for you?!
I still haven’t used mine, I’ve been saving it.
The boost definitely does not give you Legion pathfinder.
Pretty sure they said that to point out that legion PF is working properly, as they had no issues finishing it on a boosted character (i.e. probably didn’t bother with many quest lines and still succeeded in unlocking flight).