Uncaught invalid image, images dictionary should contain dataURL entries (or local file paths in node.js)

Question

When i do export cloned html to PDF, I'm getting bellow error.

Uncaught invalid image, images dictionary should contain dataURL entries (or local file paths in node.js)

here is my code:

var clonedHTML = $('#ASPxScheduler1').clone(); html2canvas(clonedHTML[0], { letterRendering: 1, allowTaint: false, logging: true, useCORS: true, onrendered: function (canvas) { var data = canvas.toDataURL(); var docDefinition = { content: [{ image: data, width: 1100, height: 450 }], pageSize: 'A3', pageOrientation: 'landscape' }; pdfMake.createPdf(docDefinition).download("My-Calendar.pdf"); } });