Error Code: 1021 (There is something wrong with your request headers)

HTTP status Code: 400

This error is all about your request headers.

In most cases you should send us at least:

• X-Auth-Token - if you are using api-key authorization
• Authorization - if you are using oAuth2 authorization
• Content-Type - this should be sent always, and for now it should be set to 'application/json'

If you get this error, please check you request headers.