The attached PowerPoint file, which contains a chart with error bars, cannot be opened by Aspose.Slides 15.9. That is, the following line of code fails with a PptxReadException wrapping a NullReferenceException:
As far as I can tell, the only way to get the file to open is to completely remove the error bars from the chart. I wasn’t able to work around the error by changing any of the format options.
This bug also applies to previous versions of Aspose - I also experienced it with versions 15.3 and 15.7.