Stuck in the Vaal trial room

Hi,

First of all sorry for bad english, not my first language

Since the new league, i did multiple run in the new vaal trial thingy. But i've been stuck recently. In the "corruption room". I've killed all the monsters in the room but no reward appears and the room stays closed. If i leave and comeback it stays the same.

I don't know how to proceed since i can't reset the trial

Any help is welcomed.