title: Unable to access to mlflow ui
body: <p>By following quickstart and tutorial at <a href="https://www.mlflow.org/docs/latest/quickstart.html" rel="noreferrer">https://www.mlflow.org/docs/latest/quickstart.html</a>, and <a href="https://www.mlflow.org/docs/latest/tutorial.html" rel="noreferrer">https://www.mlflow.org/docs/latest/tutorial.html</a>, the execution of train.py works fine. </p>
  
  <pre><code>Elasticnet model (alpha=0.500000, l1_ratio=0.500000):
    RMSE: 0.8222428497595403
    MAE: 0.6278761410160693
    R2: 0.12678721972772622
  </code></pre>
  
  <p>But when launching the ui <code>mlflow ui</code>, and accessing to the web page localhost:5000, the browser complains </p>
  
  <pre><code>Not Found
  
  The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.
  </code></pre>
  
  <p>What went wrong and how to fix this? </p>
  
  <p>Thanks</p>