title: Why I get 500 error code while running SessionExample in Apache IoTDB
body: <p>You can sess the Exception details in the following picture.
  <a href="https://i.stack.imgur.com/Yqkcs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Yqkcs.png" alt="enter image description here" /></a></p>