title: Scrapy is provides no output with xpath selector
body: <p>This is the code I am trying to run in scrapy shell to get the headline of the article from dailymail.co.uk.</p>
  
  <pre><code>headline = response.xpath("//div[@id='js-article-text']/h2/text()").extract()
  </code></pre>
  
  <hr>
  
  <pre><code>$ scrapy shell "https://www.dailymail.co.uk/tvshowbiz/article-8257569/Shia-LaBeouf-revealed-heavily-tattoo-torso-goes-shirtless-run-hot-pink-shorts.html"
  </code></pre>