Error while processing PDF
I've managed to upload part two of our exams (after scanning it again as the previous file had lots of failures, I think because of low contrast), but now I got this error: "Error processing page 159: int() argument must be a string, a bytes-like object or a number, not 'NoneType'"
The process seems to be stuck, or has halted. The particular page is slightly more tilted than others, but the marks are still visible. Any help would be appreciated! Thank you, Robert