Tabulator dataTree

not working copy/paste from documentation http://tabulator.info/examples/5.0#tree

by ivos

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/tabulator/5.0.0/js/tabulator.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/tabulator/5.0.0/css/tabulator.min.css">
<div id="example-table"></div>

JavaScript

var table = new Tabulator("#example-table", {
    height:"311px",
    data:tableDataNested,
    dataTree:true,
    dataTreeStartExpanded:true,
    columns:[
    {title:"Name", field:"name", width:200, responsive:0}, //never hide this column
    {title:"Location", field:"location", width:150},
    {title:"Gender", field:"gender", width:150, responsive:2}, //hide this column first
    {title:"Favourite Color", field:"col", width:150},
    {title:"Date Of Birth", field:"dob", hozAlign:"center", sorter:"date", width:150},
    ],
});

var tableDataNested = [
    {name:"Oli Bob", location:"United Kingdom", gender:"male", col:"red", dob:"14/04/1984", _children:[
        {name:"Mary May", location:"Germany", gender:"female", col:"blue", dob:"14/05/1982"},
        {name:"Christine Lobowski", location:"France", gender:"female", col:"green", dob:"22/05/1982"},
        {name:"Brendon Philips", location:"USA", gender:"male", col:"orange", dob:"01/08/1980", _children:[
            {name:"Margret Marmajuke", location:"Canada", gender:"female", col:"yellow", dob:"31/01/1999"},
            {name:"Frank Harbours", location:"Russia", gender:"male", col:"red", dob:"12/05/1966"},
        ]},
    ]},
    {name:"Jamie Newhart", location:"India", gender:"male", col:"green", dob:"14/05/1985"},
    {name:"Gemma Jane", location:"China", gender:"female", col:"red", dob:"22/05/1982", _children:[
        {name:"Emily Sykes", location:"South Korea", gender:"female", col:"maroon", dob:"11/11/1970"},
    ]},
    {name:"James Newman", location:"Japan", gender:"male", col:"red", dob:"22/03/1998"},
];