
Traceback (most recent call last):


 "<string>", line 1, in <module>


 "/tmp/pip-install-wotkbnjo/pypika/setup.py", line 39, in <module>

version=version(),


 "/tmp/pip-install-wotkbnjo/pypika/setup.py", line 13, in version

with open(path, 'rU') as file:

ValueError: invalid mode: 'rU'

Traceback (most recent call last):


 "runpy.py", line 194, in _run_module_as_main


 "runpy.py", line 87, in _run_code


 "site.py", line 82, in <module>


 "site.py", line 77, in main


 "site.py", line 49, in run_entry_point


 "calibre\utils\ipc\worker.py", line 197, in main


 "<string>", line 1, in <module>


 "calibre\srv\render_book.py", line 870, in viewer_main


 "calibre\srv\render_book.py", line 861, in render_for_viewer


 "calibre\srv\render_book.py", line 838, in render


 "calibre\ebooks\oeb\iterator\book.py", line 63, in extract_book


 "calibre\customize\conversion.py", line 245, in __call__


 "calibre\ebooks\conversion\plugins\txt_input.py", line 287, in convert


 "calibre\ebooks\conversion\plugins\html_input.py", line 84, in convert


 "calibre\ebooks\conversion\plugins\html_input.py", line 145, in create_oebbook


 "calibre\ebooks\html\input.py", line 252, in get_filelist


 "calibre\ebooks\html\input.py", line 225, in traverse


 "calibre\ebooks\html\input.py", line 111, in __init__
ValueError: embedded null character
