Cannot copy book to another library
getting this error:
calibre, version 7.19.0
ERROR: Failed to copy books: Could not copy any books, click "Show details" for more information.
Failed to copy a book, see below for details
Copying: The Ultimate Docker Container Book failed, with error:
Traceback (most recent call last):
File "calibre\db\cache.py", line 84, in call_func_with_lock
File "calibre\db\locking.py", line 232, in acquire
File "calibre\db\locking.py", line 102, in acquire
File "calibre\db\locking.py", line 172, in _acquire_shared
calibre.db.locking.DowngradeLockError: can't downgrade SHLock object
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "calibre\gui2\actions\copy_to_library.py", line 180, in _doit
File "calibre\gui2\actions\copy_to_library.py", line 190, in do_one
File "calibre\db\copy_to_library.py", line 90, in copy_one_book
File "calibre\db\cache.py", line 90, in call_func_with_lock
File "calibre\db\cache.py", line 964, in get_item_ids
File "calibre\db\fields.py", line 548, in item_ids_for_names
File "calibre\db\tables.py", line 289, in item_ids_for_names
UnboundLocalError: cannot access local variable 'iid' where it is not associated with a value
How to resolve this? Thnak you
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