title: expected status code in (200-299) got 503
body: <p>I got the following error 
  expected status code in (200-299) got 503.</p>
  
  <p>I didn't get this all the time. Sometimes I notice this error. I am unable to figure out the exact reason.</p>
  
  <p>The base URL I am using in the application is in following format.</p>
  
  <p>BaseURL: <a href="https://staging.something.com" rel="nofollow">https://staging.something.com</a></p>
  
  <p>For every request I append to base url as follows.</p>
  
  <p>"BaseURL/api/"</p>
  
  <p>Please let me know if any issues.</p>