Canvas2image script does not work on Chome

Question

Good afternoon to all,

I’m developing an e-mail signature generator here for the service. I took a ready script that uses 'html2canvas' and 'canvas2image' to transform the code into an image and later, allow the user to save the image as .png. However, when I click on the "Save Signature" button an example of the signature appears below that person can select 'Save as." but the company logo, which is in the project folder in . png format does not appear in the final result.

The JS code I’m using is this

$(function() { 
$("#btnSave").click(function() { 
    html2canvas($("#gerador"), {
        onrendered: function(canvas) {
            theCanvas = canvas;
            document.body.appendChild(canvas);
            var photo = canvas.toDataURL('image/png');

            //Convert and download as image 
            Canvas2Image.saveAsPNG(canvas);
            // Clean up 
            document.body.removeChild(canvas);

        }

    });
  });
}); 

I know this script carries out the download of the file, however the same is coming without any extension,.

I appreciate all your help.