I'm trying to print an html page by a .net library called HiQPdf but something goes wrong and my pdf file shows like this: link to image
Html code: https://pastebin.com/L4YcWzuM
<td colspan="2">
<div id="containerPUN"></div>
</td>
Highcharts.chart('containerPUN', {
title: {
text: 'Andamento Indice PUN'
},
xAxis: {
categories: ascisse,
labels: {
rotation: 0
}
},
series: [{
name: 'Valori',
data: <%=datiAndamentoPun %>
}]
});
ps. This is my first post so be lenient.