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About the Aspose.PDF for .NET(ubuntu thumbnail error)

I created thumnail(png/jpg/tiff) by pdf document. (Aspose.PDF 22.2.0)
https://docs.aspose.com/pdf/net/convert-pdf-to-images-format/

It was created normally in Windows, but a black rectangle is displayed in ubuntu.
I installed msttcorefonts and gdiplus.
And add fontsource like below
FontRepository.Sources.Add(new FolderFontSource("/usr/share/fonts/truetype/msttcorefonts/"));

If this issue is solved, I will purchase it.

[System Information]

  • Ubuntu
    ** No LSB modules are available.
    ** Distributor ID: Ubuntu
    ** Description: Ubuntu 20.04.3 LTS
    ** Release: 20.04
    ** Codename: focal
  • dotnet core
    ** Host (useful for support):
    *** Version: 3.1.22
    *** Commit: 35fa579a30
    ** .NET Core runtimes installed:
    *** Microsoft.NETCore.App 3.1.22 [/dotnetcore/shared/Microsoft.NETCore.App]
    windows.png (96.5 KB)
    png_ubuntu.png (60.5 KB)input01.pdf (69.0 KB)

@jwpark3

We have managed to reproduce the same issue at our side. For the sake of correction, we have logged this problem in our issue tracking system as PDFNET-51401. You will be notified via this forum thread once this issue is resolved.

We apologize for your inconvenience.