Bug report: object1 is undefined

I get the following error. I can’t find it anywhere on the web.I’m using phaser 3.55.2 not minified.

Uncaught TypeError: object1 is undefined
    collideObjects https://cdn.jsdelivr.net/npm/phaser@3.55.2/dist/phaser.js:126291
    update https://cdn.jsdelivr.net/npm/phaser@3.55.2/dist/phaser.js:129644
    update https://cdn.jsdelivr.net/npm/phaser@3.55.2/dist/phaser.js:125511
    emit https://cdn.jsdelivr.net/npm/phaser@3.55.2/dist/phaser.js:1928
    step https://cdn.jsdelivr.net/npm/phaser@3.55.2/dist/phaser.js:49066
    update https://cdn.jsdelivr.net/npm/phaser@3.55.2/dist/phaser.js:100289
    step https://cdn.jsdelivr.net/npm/phaser@3.55.2/dist/phaser.js:162805
    step https://cdn.jsdelivr.net/npm/phaser@3.55.2/dist/phaser.js:89366
    step https://cdn.jsdelivr.net/npm/phaser@3.55.2/dist/phaser.js:89613
    step https://cdn.jsdelivr.net/npm/phaser@3.55.2/dist/phaser.js:89615
    [ etc. ]

The line in my code is:

const game = new Phaser.Game(config);

:wave:

This is usually from passing undefined as the first argument to collider() or overlap().

Thanks, that fixed it!