A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: controllers/good.php

Line Number: 18

Fatal error: Uncaught exception 'Exception' with message 'wrong id: ' in /opt/WWWRoot/moda/wwwroot/application/models/class/mTree.php:59 Stack trace: #0 /opt/WWWRoot/moda/wwwroot/application/models/class/mTree.php(165): mTree->getItem(NULL) #1 /opt/WWWRoot/moda/wwwroot/application/models/class/mTree.php(160): mTree->_getParentElementForPath(NULL, Array) #2 /opt/WWWRoot/moda/wwwroot/application/controllers/good.php(18): mTree->getPathUp(NULL) #3 [internal function]: Good->index('zabaione-svtle-...') #4 /opt/WWWRoot/moda/wwwroot/system/core/CodeIgniter.php(359): call_user_func_array(Array, Array) #5 /opt/WWWRoot/moda/wwwroot/index.php(203): require_once('/opt/WWWRoot/mo...') #6 {main} thrown in /opt/WWWRoot/moda/wwwroot/application/models/class/mTree.php on line 59