Exporting SVG vaadin chart with getMarker().setSymbol no diplaying

I’ve been trying to get Vaadin chart to export a chart via SVG format The export works fine except we are using custom DataSeriesItem marker images for certain points on the chart. The chart displays fine in the browser, showing all marker images as expected, but when exported it doesn’t drag in the custom images, as in it only displays the line series. I am using

DataSeries ds = new DataSeries();
DataSeriesItem dsi = new DataSeriesItem();

MarkerSymbolUrl ms = new MarkerSymbolUrl(“halfcloudcover.png”);
dsi.getMarker().setSymbol(ms);

ds.add(dsi)
configuration.addSeries(ds);

Is there any way to get the SVG export process to pull in the images ?

Thanks in advance