'NoneType' object has no attribute 'get' in _mkannotation

[0xabu]

I have downloaded the folder including your last update, run an extraction from a pdf and I get back the following errors:

  File "/Users/.../pdfannots.py", line 10, in <module>
    sys.exit(main())
  File "/Users/.../pdfannots/cli.py", line 141, in main
    doc = process_file(
  File "/Users/.../pdfannots/__init__.py", line 448, in process_file
    annot = _mkannotation(pa.resolve(), page)
  File "/Users/.../pdfannots/__init__.py", line 46, in _mkannotation
    subtype = pa.get('Subtype')
AttributeError: 'NoneType' object has no attribute 'get'

The call function used is: python3 pdfannots.py "file_2017.pdf" -o notes.md --print-filename -p
The md output is blank.

Originally posted by @Chris-mik in #41 (comment)

[0xabu]

@Chris-mik this looks like a partly malformed PDF -- there's an entry in the page's Annots structure that does not refer to a valid object. I can change the code to ignore such entries, but would like to have a test case to check with. Are you able to share the PDF? If not, perhaps you could try to recreate the issue on a different PDF using the same annotation software?

[0xabu]

@Chris-mik, I hope the above-referenced commit fixed this crash, but would still appreciate if you could confirm that, and even better if you could share a PDF that demonstrates the issue. In the meantime, I'll close this.