Error when changing any option in UPnP Page

[megapearl]

Hello,

When I change anything in the Services -> uPNP & NAT-PMP page (for example deselect Enable) and press Save, PFSense pops up with error message in upper right corner (pfSense is restoring the configuration /cf/conf/backup/config-1478874683.xml @ 2016-11-11) and nothing happens.

Tested it on 2 different Servers, at version:

2.3.3-DEVELOPMENT (amd64) 
built on Fri Nov 11 06:55:37 CST 2016 
FreeBSD 10.3-RELEASE-p12

In Logs:

Nov 11 15:38:30	php-fpm	40926	/pkg_edit.php: New alert found: pfSense is restoring the configuration /cf/conf/backup/config-1478874683.xml
Nov 11 15:38:30	php-fpm	40926	/pkg_edit.php: pfSense is restoring the configuration /cf/conf/backup/config-1478874683.xml
Nov 11 15:38:30	php-fpm	40926	/pkg_edit.php: XML error: XML_ERR_NAME_REQUIRED at line 3789 in /conf/config.xml
Nov 11 15:38:00	php-fpm	29952	/pkg_edit.php: miniupnpd: Restarting service on interface: lan

How to debug?

[jimp]

Try a snapshot dated yesterday afternoon or later. There was a change that was reverted that looks like it would fix that problem.

[megapearl]

Confirmed working again on:

2.3.3-DEVELOPMENT (amd64) 
built on Sun Nov 13 21:49:19 CST 2016 
FreeBSD 10.3-RELEASE-p12