Trial of corruption - You do not have the required quest state

Hi,

my teammate teleported to the graveyard keeper i dont know the name "L..." something.
He(my teammate) opened the doors after I transported on the corresponding map... well ... i cant open the doors because they are open.
I teleported directly to my mate... now we are in the boss arena ... door still open no option to click or pass through them.
We revived "The Hooded one" -> we got the quest -> travel to the hunting grounds.

Not for you my friend: "you do not have the required quest state".

Any tips or solutions?