ERROR:root:file has not been decrypted

While trying to upload a pdf file following error is through.

ERROR:root:file has not been decrypted
Traceback (most recent call last):
File "c:\py3\lib\site-packages\excalibur\tasks.py", line 57, in split
save_page(file.filepath, file.page_number)
File "c:\py3\lib\site-packages\excalibur\utils\task.py", line 10, in save_page
page = infile.getPage(page_number - 1)
File "c:\py3\lib\site-packages\PyPDF2\pdf.py", line 1176, in getPage
self._flatten()
File "c:\py3\lib\site-packages\PyPDF2\pdf.py", line 1505, in _flatten
catalog = self.trailer["/Root"].getObject()
File "c:\py3\lib\site-packages\PyPDF2\generic.py", line 516, in __getitem__
return dict.__getitem__(self, key).getObject()
File "c:\py3\lib\site-packages\PyPDF2\generic.py", line 178, in getObject
return self.pdf.getObject(self).getObject()
File "c:\py3\lib\site-packages\PyPDF2\pdf.py", line 1617, in getObject
raise utils.PdfReadError("file has not been decrypted")
PyPDF2.utils.PdfReadError: file has not been decrypted

Start by reproducing the upload with the encrypted PDF and inspect the traceback locations in excalibur/tasks.py and excalibur/utils/task.py, especially split and save_page. Check how PyPDF2 handles the file before getPage is called. The issue does not define the expected behavior after detecting an undecrypted file, so the completion criteria need clarification.

Written by the indexing model from the issue text.