Fatal error: Uncaught Error: Class 'Concrete\Controller\Dialog\Tree\Node' not found in /home/gmcguire/public_html/concrete5/concrete/controllers/dialog/tree/node/category/add.php:11 Stack trace: #0 {main} thrown in /home/gmcguire/public_html/concrete5/concrete/controllers/dialog/tree/node/category/add.php on line 11