title: peewee playhouse.flask_utils import object_list appear nothing in the home page
body: <p>I am trying to use peewee flask utils but I dont know what's wrong. It doesn't show anything. </p>
  
  <p>Here is the code:</p>
  
  <p>backend:  <a href="https://i.stack.imgur.com/sdPoU.png" rel="nofollow noreferrer">https://i.stack.imgur.com/sdPoU.png</a></p>
  
  <p>browser display: <a href="https://i.stack.imgur.com/PThzr.png" rel="nofollow noreferrer">https://i.stack.imgur.com/PThzr.png</a></p>
  
  <p>html code: <a href="https://i.stack.imgur.com/mQqah.png" rel="nofollow noreferrer">https://i.stack.imgur.com/mQqah.png</a></p>