In this example it works perfect.
var chartData = [ {
"country": "USA",
"visits": 4252
}, {
"country": "China",
"visits": 1882
}, {
"country": "Japan",
"visits": 1809
}, {
"country": "Germany",
"visits": 1322
}, {
"country": "UK",
"visits": 1122
}, {
"country": "France",
"visits": 1114
}, {
"country": "India",
"visits": 984
}, {
"country": "Spain",
"visits": 711
}, {
"country": "Netherlands",
"visits": 665
}, {
"country": "Russia",
"visits": 580
}, {
"country": "South Korea",
"visits": 443
}, {
"country": "Canada",
"visits": 441
}, {
"country": "Brazil",
"visits": 395
}, {
"country": "Italy",
"visits": 386
}, {
"country": "Australia",
"visits": 384
}, {
"country": "Taiwan",
"visits": 338
}, {
"country": "Poland",
"visits": 328
} ];
AmCharts.makeChart( "chartdiv", {
"type": "pie",
"language": "es",
"startDuration": 1,
"theme": "light",
"dataProvider": chartData,
"valueField": "visits",
"titleField": "country",
"outlineAlpha": 0.4,
"depth3D": 15,
"balloonText": "[[title]]<br><span style='font-size:14px'><b>[[value]]</b> ([[percents]]%)</span>",
"angle": 30,
"export": {
"enabled": true
},
} );
#chartdiv {
width: 100%;
height: 500px;
}
<script src="https://www.amcharts.com/lib/3/amcharts.js"></script>
<script src="https://www.amcharts.com/lib/3/pie.js"></script>
<script src="https://www.amcharts.com/lib/3/plugins/export/export.min.js"></script>
<link rel="stylesheet" href="https://www.amcharts.com/lib/3/plugins/export/export.css" type="text/css" media="all" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/amcharts/3.21.6/plugins/export/lang/es.js"></script>
<script src="https://www.amcharts.com/lib/3/themes/light.js"></script>
<div id="chartdiv" style="width: 640px; height: 400px;"></div>
But if I download those libraries, I keep them in a folder like / amcharts and call them like this:
<script src="/amcharts/amcharts.js" type="text/javascript"></script>
<script src="/amcharts/pie.js" type="text/javascript"></script>
<script src="/amcharts/export.min.js" type="text/javascript"></script>
<link href="/amcharts/export.css" rel="stylesheet" type="text/css" />
<script src="/amcharts/es.js" type="text/javascript"></script>
<script src="/amcharts/light.js" type="text/javascript"></script>