Deeds of a Champion - Wail of the Forgotten can't progress

Hi,
My quest Deeds of a Champion ask me to complete The Kurast Undercity and then Wail of the Forgotten. First part (kurast undercity) is done and has the green check mark but there is no marker to continue and do Wail of the Forgotten…
I search everywhere for Sihek, even did the undercity again, he’s not in here, nobody to talk to in the council, no mercenary quests to do, just nothing … No marker anywhere, don’t know what to do ?