I´ve been pulling my hair for a couple of days now trying to get started with Matter.
When adding a sprite I I get an error saying “Cannot read properties of undefined (reading ‘add’)”, as if the matter object did not exist.
I´m getting the same result when copy-pasting examples from the Phaser site (like this one for example: Phaser - Examples - Collision Event)
Do I have to manually import Matter? Or initialize it somehow?