Bug in the story mission \"Plunge into darkness\" (Horizon: Zero Dawn)

Hello, dear users! I'm asking for your help! There was a problem during the "Dive into the Darkness" task. 150 steps. I already watched the passage of this moment at Kuplinov. He has Silence reporting everything to him. Could you explain what my problem is and how to solve it? I went through all the side quests available to me in the settlements, played 55 hours and got the best outfit in the game. Thanks in advance!