ReferenceError: updatedResponse is not defined

I got an error while using this library and calling ```payments.create``` with ```white_label = false```:

```
ReferenceError: updatedResponse is not defined
    at _handleResponse (/node_modules/@sellix/node-sdk/src/Request.js:52:7)
    at _request (/node_modules/@sellix/node-sdk/src/Request.js:30:10)
```
