How to retry the request n times when an item gets an empty field? : <p>I'm trying to scrap a range of webpages but I got holes, sometimes it looks like the website fails to send the html response correctly. This results in the csv output file to have empty lines. How would one do to retry n times the request and the parse when the xpath selector on the  response is empty ? Note that I don't have any HTTP errors.</p>
