title: Why getting requests.exceptions.ConnectionError: HTTPConnectionPool error while using TFSAPI?
body: <p>I was working on establishing connection with TFS using dohq-tfs library. </p>
  
  <p>But when I am trying to extract the workitem using <code>get_workitem()</code>, it is throwing the <strong>requests.exceptions.ConnectionError: HTTPConnectionPool</strong> error.</p>
  
  <p>I used <a href="https://devopshq.github.io" rel="nofollow noreferrer">https://devopshq.github.io</a> for reference.</p>