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Jasper Reports Exporter error with images (PowerPoint)

I am using the Jasper Reports exporter to generate a PowerPoint report. When I tried adding an image element to the report, I got the following exception. In case it matters, the imageExpression contains an HTTP URL.

Exception in thread "main" java.lang.NullPointerException
at com.aspose.slides.jasperreports.c.b(Unknown Source)
at com.aspose.slides.jasperreports.c.a(Unknown Source)
at com.aspose.slides.jasperreports.JRPptExporter.a(Unknown Source)
at com.aspose.slides.jasperreports.JRPptExporter.a(Unknown Source)
at com.aspose.slides.jasperreports.JRPptExporter.a(Unknown Source)
at com.aspose.slides.jasperreports.JRPptExporter.a(Unknown Source)
at com.aspose.slides.jasperreports.JRPptExporter.exportReport(Unknown Source)

Dear Mike,

Thanks for considering Aspose.Slides for JasperReports.

Technical team will look into this issue and let you know as soon as possible.

Hello,

I don’t think that URL can be a reason of the problem because images should be downloaded by JasperReports.
Could you please attach .jrprint file here for testing?
You can make post private in case report contains any sensitive data.