HTMLZ Ebook Viewer Error

[alekovine]

I am having a similar error to https://www.mobileread.com/forums/sh....php?p=4365936. Below is the error message. I tried uninstalling, clearing out all cache, reinstalling, and installing the flatpak. I can confirm it opens fine on Windows 11 but it fails on Pop OS 22.04.

calibre, version 7.22.0
...
Failed to convert book: ... with error:
InputFormatPlugin: HTLZ Input running
on ...
Multiple HTML files found in the archive. Only index.html will be used.
Language not specified
Creator not specified
Building file list...
Normalizing filename cases
Rewriting HTML links
Forcing index1.html into XHTML namespace
Failed to run pipe worker with command: from calibre.srv.render_book import viewer_main; viewer_main()
Traceback (most recent call last):
File "runpy.py", line 198, in _run_module_as_main
File "runpy.py", line 88, in _run_code
File "site.py", line 47, in <module>
File "site.py", line 43, in main
File "calibre/utils/ipc/worker.py", line 196, in main
File "<string>", line 1, in <module>
File "calibre/srv/render_book.py", line 847, in viewer_main
File "calibre/srv/render_book.py", line 838, in render_for_viewer
File "calibre/srv/render_book.py", line 816, in render
File "calibre/srv/render_book.py", line 606, in process_exploded_book
File "calibre/srv/render_book.py", line 251, in create_cover_page
File "calibre/ebooks/oeb/polish/container.py", line 1000, in generate_item
IndexError: list index out of range

[kovidgoyal]

Do the same thing that was asked for in that thread.

[alekovine]

Submitted here: https://bugs.launchpad.net/calibre/+bug/2091451