anthonyg-schedule-phases

[broken field]

@sonic sage please keep all questions to the open thread when you have one instead

it's an API version difference

https://stripe.com/docs/upgrades#2020-08-27

On subscription schedules, phases.plans has been renamed to phases.items. This applies for the subscription schedule object as well as create and update requests.

your account is likely on an old API version and your code doesn't properly force the API version you expect: https://stripe.com/docs/api/versioning