[mmaurente]

When trying to import a new book it says there was a problem adding new files. When I click on show details, it gives this message:

calibre, version 7.26.0
WARNING: Errors adding: There were problems adding some files, click "Show details" for more information

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Failed to add file Q:/Books/730 - Livros Kindle/1984 - George Orwell.epub for the book: 1984
With error:
Traceback (most recent call last):
File "calibre\gui2\add.py", line 488, in add_formats
File "calibre\db\cache.py", line 1989, in add_format
File "calibre\db\tables.py", line 710, in update_fmt
File "calibre\db\backend.py", line 1145, in execute
File "C:\t\t\apsw-42s16m2x\src\cursor.c", line 240, in resetcursor
apsw.CantOpenError: CantOpenError: unable to open database file