title: summarizer won't work with list as attribute
body: <p>I use the pipeline in python to summarize reviews</p>
  <p>This code works and gives me the summary:</p>
  <pre><code>    article = 'Everything is good and clean, but the swimming pool does not work at this time, according to their words, they say maintenance and God knows Parking needs umbrellas Breakfast is good and the bed is excellent and comfortable and the view of the room is great.'
      text = summarizer(article)[0]['summary_text']
  </code></pre>
  <p>But this doesn't work:</p>
  <pre><code>text = summarizer(chunks[0])[0]['summary_text']
  </code></pre>
  <p>despite <code>chunks[0]</code> containing the same text as <code>article</code></p>
  <p>And the error is: <a href="https://i.stack.imgur.com/urPkV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/urPkV.png" alt="enter image description here" /></a></p>
  <p>Why won't it work? what should I do? I need to summarize all items of <code>chunks</code> in a loop</p>
  <p>Edit:</p>
  <p>I solve it by reducing the size of <code>chunks[0]</code> so the summarizer could accept it.</p>