Stuck Sylvan's Crade Main quest.

I kill boss Azazel (bear) early before get this step at main quest.

When I come again at empty room boss and quest step change to Kill Azazal, the Penitetn nothing happens.

I can go end level thought open door after boss room and use portal at the end of level as first time when I kill boss, but now main quest stuck and I can't complete it.