title: Error with gunicorn server start
body: <p>On an external server, I tried to run the command:</p>
  
  <pre><code>gunicorn --bind 0.0.0.0:8000 jeremiesblog.wsgi:application
  </code></pre>
  
  <p>I got this error: </p>
  
  <pre><code>[2017-01-29 15:08:02 +0000] [19640] [INFO] Starting gunicorn 19.4.5
  [2017-01-29 15:08:02 +0000] [19640] [ERROR] Connection in use: ('0.0.0.0', 8000)
  [2017-01-29 15:08:02 +0000] [19640] [ERROR] Retrying in 1 second.
  [2017-01-29 15:08:03 +0000] [19640] [ERROR] Connection in use: ('0.0.0.0', 8000)
  [2017-01-29 15:08:03 +0000] [19640] [ERROR] Retrying in 1 second.
  [2017-01-29 15:08:04 +0000] [19640] [ERROR] Connection in use: ('0.0.0.0', 8000)
  [2017-01-29 15:08:04 +0000] [19640] [ERROR] Retrying in 1 second.
  [2017-01-29 15:08:05 +0000] [19640] [ERROR] Connection in use: ('0.0.0.0', 8000)
  [2017-01-29 15:08:05 +0000] [19640] [ERROR] Retrying in 1 second.
  [2017-01-29 15:08:06 +0000] [19640] [ERROR] Connection in use: ('0.0.0.0', 8000)
  [2017-01-29 15:08:06 +0000] [19640] [ERROR] Retrying in 1 second.
  [2017-01-29 15:08:07 +0000] [19640] [ERROR] Can't connect to ('0.0.0.0', 8000)
  </code></pre>
  
  <p>What can I do to fix this issue?</p>