When I talk to Ikora, in fragments section I have all Fragments available, except Echo of Reprisal. On mouseover it says 'Complete "Learning Light" to unlock'. But I have no such quest nor quest starter icon for it. I've checked the abandoned quest kiosk and it's not there. I've tried to create a new Titan, completed this quest on him, but this fragment is still locked for warlock. iirc, I've created this warlock char right after ACC migration was introduced, played a bit of forsaken, and returned to play 3 weeks ago.