[BUG] Latest version fails to import books to calibre

[holl595]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

I have had to go back to version-9559abb2 which has resolved the issue, I'm not sure what has been broken in the latest version but when trying to import a book into the calibre library it fails with the following in the logs.

/app/lazylibrarian/lazylibrarian/calibre_integration.py", line 475, in send_to_calibre f"Unhandled exception importing to calibre: {traceback.format_exc()}" ^^^^^^^^^ NameError: name 'traceback' is not defined. Did you forget to import 'traceback'

Expected Behavior

The book should import as it does with version-9559abb2

Steps To Reproduce

Download a book and then run the post processor

Environment

- OS: Debian 12
- How docker service was installed: disto package manager

CPU architecture

x86-64

Docker creation

Docker compose

Container logs

2025-12-31 19:44:23,812 DEBUG: Found folder (100.0%) [/downloads/sabnzbd/complete/Katherine Rundell - The Good Thieves (retail) (epub)] for ebook Katherine Rundell - The Good Thieves (retail) (epub) [postprocess.py:1642 (POSTPROCESS)]
2025-12-31 19:44:23,813 DEBUG: Found match (100.0%): /downloads/sabnzbd/complete/Katherine Rundell - The Good Thieves (retail) (epub) for BookState(id=43822081, type=eBook, download_title='Katherine Rundell - The Good T...', source=SABNZBD, status=Snatched, candidate=/downloads/sabnzbd/complete/Katherine Rundell - The Good Thieves (retail) (epub), skipped=False) Katherine Rundell - The Good Thieves (retail) (epub) [postprocess.py:1797 (POSTPROCESS)]
2025-12-31 19:44:23,817 INFO: DESTINATION PROCESSING - Book type: ebook, Source: /downloads/sabnzbd/complete/Katherine Rundell - The Good Thieves (retail) (epub), Destination: /books/Katherine Rundell/The Good Thieves, Global name: The Good Thieves - Katherine Rundell [postprocess.py:3682 (POSTPROCESS)]
2025-12-31 19:44:23,817 DEBUG: PreProcess (ebook) /downloads/sabnzbd/complete/Katherine Rundell - The Good Thieves (retail) (epub) [postprocess.py:3737 (POSTPROCESS)]
2025-12-31 19:44:23,885 ERROR: Unhandled exception in process_dir: Traceback (most recent call last):
  File "/app/lazylibrarian/lazylibrarian/calibre_integration.py", line 94, in send_to_calibre
    dstfile = os.path.join(folder, global_name.replace('"', "_") + extn)
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: a bytes-like object is required, not 'str'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/app/lazylibrarian/lazylibrarian/postprocess.py", line 2874, in process_dir
    result = _process_snatched_book(
             ^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/lazylibrarian/lazylibrarian/postprocess.py", line 2188, in _process_snatched_book
    return _process_book_after_matching(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/lazylibrarian/lazylibrarian/postprocess.py", line 2109, in _process_book_after_matching
    success, dest_file, book_path = _process_destination(
                                    ^^^^^^^^^^^^^^^^^^^^^
  File "/app/lazylibrarian/lazylibrarian/postprocess.py", line 3792, in _process_destination
    return send_to_calibre(book_type, global_name, book_path, data)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/lazylibrarian/lazylibrarian/calibre_integration.py", line 475, in send_to_calibre
    f"Unhandled exception importing to calibre: {traceback.format_exc()}"
                                                 ^^^^^^^^^
NameError: name 'traceback' is not defined. Did you forget to import 'traceback'
 [postprocess.py:2936 (POSTPROCESS)]

[github-actions]

Thanks for opening your first issue here! Be sure to follow the relevant issue templates, or risk having this issue marked as invalid.