Thank you for the update. The files are marked as private so I can’t download them.
Please download Aspose.Cells for .NET latest fix 21.7.6.
Aspose.Cells21.7.6 For .Net2_AuthenticodeSigned.Zip (5.6 MB)
Aspose.Cells21.7.6 For .Net4.0.Zip (5.6 MB)
Aspose.Cells21.7.6 For .NetStandard20.Zip (5.6 MB)
We fixed the issue of reporting exceptions and now it renders the image as in v20.12.