echo '<pre>';
var_dump($hash);
die;
A node with id 1 exists
string(402) "frontend\models\Categorybtn-default/index.php?r=treemanager%2Fnode%2Fsave/index.php?r=category@kvtree/views/_formw0-nodeselnodenodes111111{"id":"w0-nodeform"}{"1":"","2":"","3":"","4":"","5":""}{"submit":"","reset":""}[]"text"{"depth":"","glue":" » ","activeCss":"kv-crumb-active","untitled":"Untitled"}"
There is no node with id 1
string(502) "frontend\models\Categorybtn-default/index.php?r=treemanager%2Fnode%2Fsave/index.php?r=category@kvtree/views/_formw0-nodeselnodenodes
**No valid are available for display. Use toolbar buttons to add .**
111111{"id":"w0-nodeform"}{"1":"","2":"","3":"","4":"","5":""}{"submit":"","reset":""}[]"text"{"depth":"","glue":" » ","activeCss":"kv-crumb-active","untitled":"Untitled"}"
TreeView.php
var dump at TreeSecurity.php line 143