Dead Early Sunset problem

[_Shoot_&_Pray_]

So on my Azata playthrough while doing the "where's my dragon?" quest where you need to find and resque Aivu I ran into a bug with dead NPC (Early Sunset). This bastard tells you to meet him at the slave market but going there you find his corpse and the quest stalls
Because of this bug I can't continue my playthrough. (made a new char now, doing the angel path)
The question is is there a way to somehow solve this problem?