Search amigo panther

Hello, this time I decided to fight for the panther. The first part of the quest was given without problems. And in the second part of the triad: past the abosi, where excavations are being carried out, in the cave the first door was opened simply with a key, and to open the second door, you must press the green button. And the button is a complete disorder, does not want to be pressed. Maybe a bug again? What do you think?