How to fix book?
When I want to edit the ToC of an epub file, Calibre shows the following error message. What can I do to fix the book? In the viewer it looks fine.
calibre, version 1.37.0
ERROR: Failed to load book:
Traceback (most recent call last):
File "site-packages\calibre\gui2\toc\main.py", line 923, in explode
File "site-packages\calibre\ebooks\oeb\polish\container.py", line 1126, in get_container
File "site-packages\calibre\ebooks\oeb\polish\container.py", line 860, in __init__
File "site-packages\calibre\ebooks\oeb\polish\container.py", line 976, in process_encryption
InvalidBook: Failed to find obfuscation key
|