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I am receiving an

unhandled exception of type 'System.NullReferenceException' occurred in Syncfusion.SfChart.WPF.dll when using the
ChartToImageConverter and converting a presentation to pdf which contains a chart of
OfficeChartType.Bar_Stacked_3D (or any other 3D ype).

Steps to reproduce:
  1. Programmatically add a chart to an ISlide with an 

    .ChartType = OfficeChartType.Bar_Stacked_3D

    2. After using the

    ChartToImageConverter, use the
    PresentationToPdfConverter.Convert method to convert the ISlide and you will receive an Exception.