I am creating an InDesign book composed of multiple placed PDF files. Whenever I go to export this book as a new print PDF, I keep receiving an error message that says "1 problem (1 failure) was found with a background task: Failed to export the PDF file." I have narrowed it down to one particular PDF within the book that seems to be causing the problem. However, I don't really know enough about PDF files to determine what the problem actually is. Does anyone have any idea what may be going on here or have any other things for me to look into to provide further information? Thanks!
Never mind! I'm not sure what the actual problem was, but after printing the file that was having the issue and re-scanning it as a new file, everything worked out.