Download a react component using jsPdf and html2canvas

i'm using html2canvas and jspdf packages to download a simple component but when i click download i get a blank pdf page without any content and there is no errors in the screen, that's my code:
import React, {Component, PropTypes} from 'react';
import html2canvas from 'html2canvas';
import jsPDF from 'jspdf';
import Pie from './Pie.js';

class Qu extends Component {
constructor(props) {
super(props);
}

printDocument() {
const input = document.getElementById('divToPrint');
html2canvas(input)
.then((canvas) => {
const imgData = canvas.toDataURL('image/png');
const pdf = new jsPDF();
pdf.addImage(imgData, 'JPEG', 0, 0);
// pdf.output('dataurlnewwindow');
pdf.save("download.pdf");
})
;
}

render() {
return (

  <div id="divToPrint" className="mt4">
    <div>Title of Component</div> 
    <div><Pie /></div>
    <div className="mb5">
    <button onClick={this.printDocument}>Print</button>
  </div>
  </div>
</div>);

}
}
export default Qu