title: Python Requests HTTPConnectionPool and Max retries exceeded with url
body: <p>On a Linux cluster, I get this error with Requests:</p>
  
  <blockquote>
    <p>ConnectionError: HTTPConnectionPool(host='andes-1-47', port=8181): Max
    retries exceeded with url: /jammy/api/v1 (Caused by : '')</p>
  </blockquote>
  
  <p>What does this error mean? Is it a Requests problem or is it on the host, and what is the solution?</p>
  
  <p>By the way, the program works successfully on both Windows and Linux standalone machines with localhost.</p>