Good day everyone, I can’t calibrate the camera. in version 4.27, it doesn’t allow me to add pictures of the chessboard, for unknown reasons the add button moves off the edge of the screen, I still haven’t found an answer, and in version 5.3 there is no such problem, but when shooting there are no lines on the chessboard, which I understand should be and indicate that the engine recognizes squares. I ask for help from everyone who knows something about this. Thank you very much.