Hi i have problem when merge pdf file in net core 3.1, but when i run the project in net core 2.1 it can work well. I use groupdocs.merger (21.8.0).
here is my sample pdf sample.pdf (26.4 KB)
here is my sample code source code.docx (12.4 KB)
We are investigating this issue with ticket ID MERGERNET-1175. You’ll be notified in case of any update.