API conexion problem

Hello,

I would like to use scrapy cloud in python but I can't connect to the API.

I receive this error message:

{'type': 'http://errors.xod.scrapinghub.com/unauthorized.html', 'title': 'Authentication token not provided or invalid'}

I used the code provided on your website to test:

https://docs.zyte.com/automatic-extraction-integrations.html

xxxxxxxxxxxxxxxx is my API key.

Do I have to fill the second field in author?

Many thanks for your help

import requests as rq
response = rq.post(
        'https://autoextract.scrapinghub.com/v1/extract',
        auth=('[xxxxxxxxxxxxxxxxxxxxxxxxxxx]', ''),
        json=[
            {'url': 'http://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html', 'pageType': 'product'}])
results = response.json()
print(results)