SAX error: [2:10] null / null / org.xml.sax.SAXParseException

Issue

When running Apache Netbeans 12.0 beta 3 from the Mac OS X command line (Terminal) we get SAX errors displayed.  This doesn't seem to affect functionality.

Davids-MBP:~ davidjlgradwell$ /Volumes/DJLGUSBDRIVE1/Apache/NetBeans/Release12beta3/netbeans/bin/netbeans
&&& SAX error: [2:10] null / null / org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 10; cvc-elt.1.a: Cannot find the declaration of element 'web-app'.
&&& SAX error: [2:10] null / null / org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 10; cvc-elt.1.a: Cannot find the declaration of element 'web-app'.

Steps to reproduce

Run Apache Netbeans 12.0 beta 3 from the command line.