npm run setup error : "unknownKey" "default"

[Charles-Gerber]

I create a new space with the locale en-US on contentful and then when I run "npm run setup" i end up with this error:

[ { "ts": "2018-10-24T12:05:08.380Z", "level": "error", "error": { "name": "UnknownKey", "entity": { "name": "U.S. English", "code": "en-US", "fallbackCode": null, "default": true, "contentManagementApi": true, "contentDeliveryApi": true, "optional": false, "sys": { "type": "Locale", "id": "3Bb4qrZtqLzwN35dmTQ6a2", "version": 0, "space": { "sys": { "type": "Link", "linkType": "Space", "id": "28p9vvm1oxuw" } }, "createdBy": { "sys": { "type": "Link", "linkType": "User", "id": "066RqBikAjzKy0SWUEtFvH" } }, "createdAt": "2017-05-11T12:01:17Z", "updatedBy": { "sys": { "type": "Link", "linkType": "User", "id": "066RqBikAjzKy0SWUEtFvH" } }, "updatedAt": "2017-05-11T12:01:17Z" } }, "data": { "status": 400, "statusText": "Bad Request", "message": "The body you sent contains an unknown key.", "details": { "keys": [ "default" ] }, "request": { "url": "https://api.contentful.com:443/spaces/a0f3ch77buu1/environments/master/locales/1wRY6kDrgoQfN7T0YtVD7E", "headers": { "Accept": "application/json, text/plain, */*", "Content-Type": "application/vnd.contentful.management.v1+json", "X-Contentful-User-Agent": "app contentful.import/7.4.1; feature library-import; sdk contentful-management.js/5.2.1; platform node.js/v10.11.0; os macOS/17.7.0;", "Authorization": "Bearer ...6575f", "user-agent": "node.js/v10.11.0", "Accept-Encoding": "gzip", "X-Contentful-Version": 1, "Content-Length": 144 }, "method": "put", "payloadData": "{\"name\":\"U.S. English\",\"code\":\"en-US\",\"fallbackCode\":null,\"default\":true,\"contentManagementApi\":true,\"contentDeliveryApi\":true,\"optional\":false}" }, "requestId": "0cf2a413e766e5ee3eb07d53b96a9585" } } } ]

I tried to remove the field "default" but it is not working.
I think I can still go through the tutorial, but just to tell you that there is an error in the init script.

Cheers,
Charles