title: Python requests module post return status code 500 error
body: <p>I want to login my university portal with request module.</p>
  
  <pre><code>import requests
  r = requests.post("https://sabis.sakarya.edu.tr/tr/Login", data={"userName":"1111","Password":"xxx"})
  print(r.status_code)
  </code></pre>
  
  <p>but r.status_code return 500.
  Where i make mistake?</p>