UCP Node is not running

In UCP interface I cannot browse Call History, “You are currently working in offline mode” message is displayed and 'UCP Node is not running" is on the dashboard.

Last updates for 13 Beta installed.

In Module Admin try uninstalling then reinstalling ucpnode.

Tried already, no result

If you’ve reinstalled ucpnode, and it took a relatively long time to install (i.e. a minute or two) then do a fwconsole restart.

edit
Just updated my 13 system, and fwconsole restart yields:

Running Post-Asterisk Scripts
Starting UCP Server
PHP Fatal error:  Call to a member function getMessage() on a non-object in /var/www/html/admin/modules/ucpnode/Ucpnode.class.php on line 255
Whoops\Exception\ErrorException: Call to a member function getMessage() on a non-object in file /var/www/html/admin/modules/ucpnode/Ucpnode.class.php on line 255
Stack trace:
  1. () /var/www/html/admin/modules/ucpnode/Ucpnode.class.php:255

An issue has been filed for this at http://issues.freepbx.org/browse/FREEPBX-10725