Hi, I think I had a major bug and don't know what to do. I'm stuck in the quest "Diplomacy and Hunting". After i get the Psilocybe mushroom, I went to see Hierophan, but i can't give him the mushroom. He walked straight to the meeting point with the enemies without receiving the mushroom, and now when i talk to him, nothing happens. It doesn't even appear the cinematic scene. Can someone help me, please?