title: Forge to upgrade Revit files
body: <p>i managed to make GitHub sample &quot;forge-upgradefiles-revit&quot; work thanks for the help by Autodesk Zhong Wu, about half of the Revit files works OK but another half have the following error, any clue what's wrong and how to fix it? thanks.
  <a href="https://i.stack.imgur.com/EtYZR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EtYZR.png" alt="enter image description here" /></a></p>