Problem to create Vastiri Horn Act 2

Hello everyone,
I'm currently stuck since the last update on making vastiri horn.
I've already finished this quest with the mercenary without any problem.

In this case, i'm playing the monk and i've finished all the zones except the boss of the bone pit before the update.

I just did it this evening and went to see Zarka to make the horn....and nothing. No manufacturing and no horn in the inventory.

Thinking that one of the bosses had been forgotten, I tried again, but nothing.... What can I do?

Any clue ?

Problem solved !

Just redo the 3 area and all the boss