Phaser-arcade-physics.min.js:1 Uncaught TypeError: Cannot read property 'isParent' of undefined

I was following the tutorial for make your first game and I mostly did everything the same, but I changed a couple things, and on part 10 I managed to break the game. Can somebody explain why it doesn’t work?

Working game: https://drive.google.com/file/d/1gYpruPUyIcZ0FelJWYwEyQ6CpEYaEDVh/view?usp=sharing

Broken Version: https://drive.google.com/file/d/1uq4bykbperSfrBrn0Rnolppk-302XZN6/view?usp=sharing