Uncaught TypeError: Cannot set property 'nodeI

I'm getting this error on boostrap-treeview.js:267 when retrieving JSON data for my boostrap-treeview.

$(document).ready(function() {
    $.ajax({ 
        url: "js/category_data.php",
        method:"POST",
        dataType: "json",            
        success: function(data) {
            $('#doctypesTree').treeview({ data: data });
        }    
    });
});

The JSON data is the following:

{
    "2":{
            "id":"12",
            "text":"Certified copy",
            "Description":"","root":"0"
        },
    "3":{
            "id":"13",
            "text":"Charter",
            "Description":"",
            "root":"0"
        },
    "4":{
            "id":"14",
            "text":"Codicil (will)",
            "Description":"",
            "root":"0"
        },
    "5":{
            "id":"15",
            "text":"Cohabitation agreement",
            "Description":"",
            "root":"0"
        },
    "6":{
            "id":"16",
            "text":"Collateral assurance",
            "Description":"",
            "root":"0"
        },
    "7":{
            "id":"17",
            "text":"Commercial invoice",
            "Description":"",
            "root":"0"
        },
    "8":{
            "id":"18",
            "text":"Complaint",
            "Description":"",
            "root":"0"
        },
    "9":{
            "id":"19",
            "text":"Conservation easement",
            "Description":"",
            "root":"0"
        },
    "10":{
            "id":"20",
            "text":"Consignee",
            "Description":"",
            "root":"0"
        },
    "11":{
            "id":"21",
            "text":"Consumer complaint",
            "Description":"",
            "root":"0"
        },
    "12":{
            "id":"22",
            "text":"Contract",
            "Description":"",
            "root":"0"
        },
    "13":{
            "id":"23",
            "text":"Contractual term",
            "Description":"",
            "root":"0"
        },
    "14":{
            "id":"24",
            "text":"Contractual terms in English law",
            "Description":"",
            "root":"0"
        },
    "15":{
            "id":"25",
            "text":"Florence Annie Conybeare",
            "Description":"",
            "root":"0"
        },
    "16":{
            "id":"26",
            "text":"Copyright transfer agreement",
            "Description":"",
            "root":"0"
        },
    "17":{
            "id":"27",
            "text":"Countersign (legal)",
            "Description":"",
            "root":"0"
        },
    "18":{
            "id":"28",
            "text":"County Court judgment",
            "Description":"",
            "root":"0"
        },
    "19":{
            "id":"29",
            "text":"Credit Support Annex",
            "Description":"",
            "root":"0"
        },
    "20":{
            "id":"30",
            "text":"Customs declaration",
            "Description":"",
            "root":"0"
        },
    "21":{
            "id":"31",
            "text":"Bills",
            "Description":"",
            "root":"0",
            "nodes":[
                        {
                            "id":"4",
                            "text":"Bill of costs",
                            "Description":"This type gather all documents related to costs","root":"31"
                        },
                        {
                            "id":"5",
                            "text":"Bill of sale",
                            "Description":"","root":"31"
                        }
                    ]
        } 
}

I am using Bootstrap Tree View

Any Ideas

Your json is an object. You'll have to convert it to an array for the tree to work. You can either change your php to return a proper array or use javascript to convert it to an array as shown below.

var data = {
  "2": {
    "id": "12",
    "text": "Certified copy",
    "Description": "",
    "root": "0"
  },
  "3": {
    "id": "13",
    "text": "Charter",
    "Description": "",
    "root": "0"
  },
  "4": {
    "id": "14",
    "text": "Codicil (will)",
    "Description": "",
    "root": "0"
  },
  "5": {
    "id": "15",
    "text": "Cohabitation agreement",
    "Description": "",
    "root": "0"
  },
  "6": {
    "id": "16",
    "text": "Collateral assurance",
    "Description": "",
    "root": "0"
  },
  "7": {
    "id": "17",
    "text": "Commercial invoice",
    "Description": "",
    "root": "0"
  },
  "8": {
    "id": "18",
    "text": "Complaint",
    "Description": "",
    "root": "0"
  },
  "9": {
    "id": "19",
    "text": "Conservation easement",
    "Description": "",
    "root": "0"
  },
  "10": {
    "id": "20",
    "text": "Consignee",
    "Description": "",
    "root": "0"
  },
  "11": {
    "id": "21",
    "text": "Consumer complaint",
    "Description": "",
    "root": "0"
  },
  "12": {
    "id": "22",
    "text": "Contract",
    "Description": "",
    "root": "0"
  },
  "13": {
    "id": "23",
    "text": "Contractual term",
    "Description": "",
    "root": "0"
  },
  "14": {
    "id": "24",
    "text": "Contractual terms in English law",
    "Description": "",
    "root": "0"
  },
  "15": {
    "id": "25",
    "text": "Florence Annie Conybeare",
    "Description": "",
    "root": "0"
  },
  "16": {
    "id": "26",
    "text": "Copyright transfer agreement",
    "Description": "",
    "root": "0"
  },
  "17": {
    "id": "27",
    "text": "Countersign (legal)",
    "Description": "",
    "root": "0"
  },
  "18": {
    "id": "28",
    "text": "County Court judgment",
    "Description": "",
    "root": "0"
  },
  "19": {
    "id": "29",
    "text": "Credit Support Annex",
    "Description": "",
    "root": "0"
  },
  "20": {
    "id": "30",
    "text": "Customs declaration",
    "Description": "",
    "root": "0"
  },
  "21": {
    "id": "31",
    "text": "Bills",
    "Description": "",
    "root": "0",
    "nodes": [{
      "id": "4",
      "text": "Bill of costs",
      "Description": "This type gather all documents related to costs",
      "root": "31"
    }, {
      "id": "5",
      "text": "Bill of sale",
      "Description": "",
      "root": "31"
    }]
  }
};

var dataArray = [];
for (var key in data) {
    if (data.hasOwnProperty(key)) {
        dataArray.push(data[key]);
    }
};

$('#tree').treeview({data: dataArray});

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://rawgit.com/jonmiles/bootstrap-treeview/master/dist/bootstrap-treeview.min.js"></script>
<div id="tree"></div>