Reports

It's possible that @Lime Husky's comment is causing the issue:

Is it possible that you only forgot to add the People API Service

If this might be the case, see Enable advanced services.

I tested your code, and it works well after I added the People API service.

Execution log:

2:27:48 AM  Notice  Execution started
2:27:50 AM  Info    { createdPeople: 
   [ { status: {},
       requestedResourceName: 'people/c8559814598637378694',
       person: [Object],
       httpStatusCode: 200 } ] }
2:27:52 AM  Info    { createdPeople: 
   [ { person: [Object],
       httpStatusCode: 200,
       status: {},
       requestedResourceName: 'people/c5855266702224524538' } ] }
2:27:53 AM  Notice  Execution completed

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