Repost the solution for clear visibility.
Solution below To resolve this issue:
1. Go to the properties of the APS service for Design Studio in your CMC console.
2. Go to the command line parameters and append the following line to the parameters listed: -Djavax.xml.parsers.SAXParserFactory=com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl
3. Hit save and close
4. Restart the APS server
5. Test your page again and the issue should now be resolved.