title: Xamarin: Getting error while building -> invalid file path 'obj\Debug\90\res\views\layouttest.xml'
body: <p>While I'm trying to build my Xamarin App, it stops everytime with the error message <code>"invalid file path 'obj\Debug\90\res\views\layouttest.xml'"</code>. I tried to delete the directory, rebuild or clean the solution and build it again. 
  The error comes from the Android Project.
  The file that is marked from VS is in the directory:
  <a href="https://i.stack.imgur.com/4quDD.png" rel="noreferrer">Directory Output</a></p>
  
  <p><strong>Update</strong>:
  As Land Lu - MSFT mentioned below, was an unused file the issue. Deleting the file and rebuilding the project worked just fine!</p>