The output PDF cannot be opened with Adobe Acrobat Pro 2022

[CYG01571]

Expected Behavior

Adobe Acrobat can open a file wrote by Pdfsharp.

Actual Behavior

Adobe acrobat shows error message for opeing file.

When I try to open a PDF file created using PDFSharp using Abobe Acrobat, an error message appears and the file cannot be opened.
The image before conversion is the image that was loaded from the PDF, handwritten, and output.
Not all output files cannot be opened.
Do I need to specify anything in the options of PdfSharp.Pdf.PdfDocument variable?
I am attaching the unopenable PDF output by PDFSharp.

My dev environment are below.

• .NET 8
• WPF App
• PDFSharp: 6.1.1
• Adobe Acrobat Pro 2022

error.pdf

[ThomasHoevel]

We don't have the original PDF, we don't have the code that makes the changes.
IMHO it is not worth trying to investigate this claim with that little input.