[yota71]

A lot of time when i mass upload books/manga Via goodreads plugin i encounter this error:
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calibre, version 5.34.0
ERRORE: Eccezione non gestita: <b>ValueError</b>:invalid literal for int() with base 10: ''
calibre 5.34 embedded-python: True is64bit: False
Windows-10-10.0.19041 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.19041')
Python 3.8.5
Windows: ('10', '10.0.19041', '', 'Multiprocessor Free')
Interface language: it
Successfully initialized third party plugins: Barnes & Noble (1, 2, 16) && Embed Comic Metadata (1, 6, 1) && Goodreads (1, 5, 1) && Goodreads Sync (1, 15, 1) && Kobo Books (1, 8, 3) && Kobo Utilities (2, 14, 1)
Traceback (most recent call last):
File "calibre_plugins.goodreads_sync.dialogs", line 1758, in action_button_clicked
File "calibre_plugins.goodreads_sync.core", line 327, in add_remove_book_to_shelf
ValueError: invalid literal for int() with base 10: ''
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Anyone know the solution to this problem?