Attachments saved to Notes cannot be opened
I have several attachments I downloaded from my email and saved to notes due to running out of email storage and to organise them here for easy location later rather than storing in folders and losing them there. These included pdfs, xml and ppts. I'm pretty sure I checked that I could open them when I saved them at the time about 1 year ago but now that I have tried to open them again for every single file i get a similar message:
The file “XXXX.pdf” could not be opened.
It may be damaged or use a file format that Preview doesn’t recognise.
This issue is consistent across both my iPhone and MacBook
Any guidance on resolving this would be much appreciated, I saved these files as they were important and now I can not access them!
MacBook Air 13″, macOS 10.15