title: "Could not find schema information for element" - warning message, what does it mean?
body: <p>Within the AppManifest.xml I'm getting two similar warning messages, just trying to distinguish what they mean? </p>
  
  <ul>
  <li><p>Could not find schema information for the element
  '<a href="http://schemas.microsoft.com/client/2007/deployment:Deployment.Parts" rel="nofollow noreferrer">http://schemas.microsoft.com/client/2007/deployment:Deployment.Parts</a>'</p></li>
  <li><p>Could not find schema information for the element '<a href="http://schemas.microsoft.com/client/2007/deployment:Deployment" rel="nofollow noreferrer">http://schemas.microsoft.com/client/2007/deployment:Deployment</a>'</p></li>
  </ul>
  
  <p><img src="https://i.stack.imgur.com/ju42p.png" alt="enter image description here"></p>