Regex issue - Githubissues

Trying to use this for the first time and I get:

09-09-2019 20:33:24    Checking for existing files... 
09-09-2019 20:33:24    Parsing Goodreads data... 
09-09-2019 20:33:47    Creating x-ray... 
09-09-2019 20:33:47        Parsing book data... 
Job: "Creating Files" failed with error: 
Traceback (most recent call last):
  File "site-packages/calibre/gui2/threaded_jobs.py", line 83, in start_work
  File "calibre_plugins.xray_creator.lib.xray_creator", line 284, in create_files_event
  File "calibre_plugins.xray_creator.lib.book", line 231, in create_files_event
  File "calibre_plugins.xray_creator.lib.book", line 269, in _create_files
  File "calibre_plugins.xray_creator.lib.book", line 495, in _parse_book
  File "calibre_plugins.xray_creator.lib.book_parser", line 67, in parse
  File "calibre_plugins.xray_creator.lib.book_parser", line 90, in _get_occurrences
  File "lib/python2.7/re.py", line 194, in compile
  File "lib/python2.7/re.py", line 251, in _compile
error: unbalanced parenthesis

szarroug3 / X-Ray_Calibre_Plugin

Regex issue #111