[VitalisTh]

Hello everyone!

I'm having a little problem with the "Order series shelves" option. After selecting and fetching 'all' series/shelves, which goes alright, I press the okay button and get the following error:

calibre, version 5.2.0
ERROR: Unhandled exception: <b>TypeError</b>:'<' not supported between instances of 'tuple' and 'str'

calibre 5.2 embedded-python: True is64bit: True
macOS-10.15.7-x86_64-i386-64bit Darwin ('64bit', '')
('Darwin', '19.6.0', 'Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64')
Python 3.8.5
OSX: ('10.15.7', ('', '', ''), 'x86_64')
Interface language: None
Successfully initialized third party plugins: Consolidate All Library Metadata (2, 0, 37) && Count Pages (1, 10, 0) && English Noun Frequency (1, 0, 12) && EpubCheck (0, 2, 3) && EpubMerge (2, 11, 0) && EpubSplit (2, 9, 0) && FanFicFare (3, 23, 0) && Fantastic Fiction (1, 4, 0) && Fantastic Fiction Adults (1, 2, 0) && Find Duplicates (1, 7, 2) && Generate Cover (1, 5, 25) && Goodreads (1, 5, 1) && Goodreads Sync (1, 14, 3) && KePub Input (3, 2, 10) && KePub Metadata Reader (3, 2, 9) && KePub Metadata Writer (3, 2, 12) && KePub Output (3, 2, 15) && Kobo Books (1, 8, 0) && Kobo Utilities (2, 11, 7) && KoboTouchExtended (3, 2, 15) && Library Codes (1, 0, 47) && Markdown Output (1, 0, 3) && Modify ePub (1, 6, 1) && Open With (1, 5, 12) && Quality Check (1, 10, 1) && Reading List (1, 6, 13) && Search The Internet (1, 8, 0) && SmartEject (2, 3, 0) && Smashwords Metadata (1, 0, 2) && Standard Ebooks (0, 1, 0) && View Manager (1, 5, 7)
Traceback (most recent call last):
File "calibre_plugins.koboutilities.action", line 1491, in order_series_shelves
starting_shelves, shelves_ordered = self._order_series_shelves(shelves, self.options)
File "calibre_plugins.koboutilities.action", line 3169, in _order_series_shelves
debug_print("_order_series_shelves - sorted shelf_dict:", sorted(shelf_dict))
TypeError: '<' not supported between instances of 'tuple' and 'str'

Anyone have any idea what's going on?