Not rendering images on server about svg2png HOT 4 CLOSED

exports.createSvg = function(item_id, svg) {
    var timestamp = Date.now();
    var svg_path = 'uploads/items/' + item_id + '.svg';
    var png_path = 'uploads/items/' + item_id + '_' + timestamp + '.png';
    var svg_buffer = new Buffer(svg);
    var s3 = new AWS.S3();
    var params = {
        Bucket: sails.config.aws.bucket,
        Key: svg_path,
        ACL: 'public-read',
        Body: svg,
        ContentType: 'image/svg+xml'
    };
    var putObjectPromise = s3.putObject(params).promise();
    return putObjectPromise.then(function(data) {
        return svg2png(svg_buffer, {
            width: 600
        });
    }).then(function(data) {
        var params = {
            Bucket: sails.config.aws.bucket,
            Key: png_path,
            Body: data,
            ContentType: 'image/png'
        };
        var putObjectPromise = s3.putObject(params).promise();
        return putObjectPromise;
    }).then(function(resp) {
        return LineItem.update(item_id, {
            svg_path: svg_path,
            png_path: png_path
        });
    }).catch(function(err) {
        console.error(err);
        reject(err);
    });
};