How do I do this😱😱

The purple block with the signal, you can never get it out, right? ( ；∀；) The signal changes between green and red every turn. You can only move it when the signal is green. During the turn you can move it, the exit is blocked by a shutter, so the exit is sealed. ...What am I supposed to do??😱😱 By the way, it's level 404. You can clear it if you use items, but it's a bug, right? (-_-)