Symfony Twig中的Orgcharts实现错误

Question

请帮助。我在Symfony 2.8项目中实现orgcharts时遇到问题。当我将示例代码放到twig文件中时，结果页面会绘制与层次结构无关的其他行。

下面的打印屏幕：

{% extends 'base.html.twig' %}

{% block title %}Example{% endblock %}
{% block stylesheets %}

    <link rel="stylesheet" href="{{ asset('bundles/href/css/home.css') }}"/>
    {{ parent() }}
{% endblock %}

{% block body %}    
    <script type="text/javascript">
        google.charts.load('current', {packages:["orgchart"]});
        google.charts.setOnLoadCallback(drawChart);

        function drawChart() {
            var data = new google.visualization.DataTable();
            data.addColumn('string', 'Name');
            data.addColumn('string', 'Manager');
            data.addColumn('string', 'ToolTip');

            // For each orgchart box, provide the name, manager, and tooltip to show.
            data.addRows([
                [{v:'Mike', f:'Mike<div style="color:red; font-style:italic">President</div>'},
                    '', 'The President'],
                [{v:'Jim', f:'Jim<div style="color:red; font-style:italic">Vice President</div>'},
                    'Mike', 'VP'],
                ['Alice', 'Mike', ''],
                ['Bob', 'Jim', 'Bob Sponge'],
                ['Carol', 'Bob', ''],
                ['Carol', 'Bob', '']
            ]);

            // Create the chart.
            var chart = new google.visualization.OrgChart(document.getElementById('chart_div'));
            // Draw the chart, setting the allowHtml option to true for the tooltips.
            chart.draw(data, {allowHtml:true});
        }
    </script>
    <div id="chart_div"></div>
{% endblock %}

之前有人在树枝上实施过orgcharts吗？请帮忙。