title: Powerapps: using Excel DataSource, Screen blank
body: <p>I'm currently following some steps in youtube, I'm making datatable in excel named <code>Employee</code> and <code>Department</code> save it to the onedrive.</p>
  
  <p>I'm creating an app, by <code>start with your data</code>
  <a href="https://i.stack.imgur.com/cv7vG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cv7vG.png" alt="enter image description here"></a></p>
  
  <p>after following the wizard,my app's screen is blank
  <a href="https://i.stack.imgur.com/zT3pB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zT3pB.png" alt="enter image description here"></a></p>
  
  <p>my data in excel is 
  <a href="https://i.stack.imgur.com/nyA4b.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nyA4b.png" alt="enter image description here"></a></p>
  
  <p><strong>What went wrong ?</strong>
  I have search it, but can't seem to find exact problem and solution for it.</p>