Pypdf2 Pdfreaderror: Could Not Read Boolean Object

I am getting the following error, when reading certain PDF files using PyPDF2. Due to the confidential nature of these documents, I can't share them, but I can try and provide info

Solution 1:

It seems as if all pdfs are encrypted in some way. Using the solution cited in this issue #53 in PyPDF2's github repository, I used the following command to generate another pdf ( The Decrypted version of the original pdf ) -

qpdf --password= --decrypt input.pdf output.pdf

and then reading output.pdf worked for me. I am not sure as to how I can determine beforehand, whether a pdf is encrypted ( or in this particular state ) or not. But this solution temporarily solves the problem.