Created zim files stuck on "loading"

[heyfordy]

Hey there,

Followed the README, using Python 3.12.3 on Ubuntu, however no matter what my file contents are, the created zim always gets stuck on "Loading..." in Kiwix. I've tried to load it in desktop and kiwix-serve, same issue. See below for screenshot:

Here are the contents of my collections.json:

[
  {
    "title": "Buddipole Powermini2 Manual",
    "description": "Manual of the Buddipole Powermini 2",
    "authors": "Buddipole",
    "files": [
      "Buddipole PowerMini2 Manual.pdf"
    ]
  }                                                                                                                   
]

And the shell output:

[nautiluszim::2025-08-20 02:41:27,615] INFO:starting nautilus scraper for test.zip
[nautiluszim::2025-08-20 02:41:27,616] INFO:preparing build folder at /root/manuals/build
[nautiluszim::2025-08-20 02:41:27,619] ERROR:Unable to extract about.html from archive: "There is no item named 'about.html' in the archive"                                                                                                    [nautiluszim::2025-08-20 02:41:27,619] INFO:Collection loaded. 1 items, 1 files
[nautiluszim::2025-08-20 02:41:27,619] INFO:update general metadata
[nautiluszim::2025-08-20 02:41:27,688] INFO:adding U.I
[nautiluszim::2025-08-20 02:41:27,746] INFO:Adding all files
[nautiluszim::2025-08-20 02:41:27,749] INFO:Finishing ZIM file
Resolve redirect
set index
[nautiluszim::2025-08-20 02:41:27,967] INFO:removing HTML folder
[nautiluszim::2025-08-20 02:41:27,967] INFO:all done!

Finally, here's what zimcheck says:

[INFO] Checking zim file ham_radio_manuals_2025-08.zim
[INFO] Zimcheck version is 3.2.0
[INFO] Verifying ZIM-archive structure integrity...
Full Title index table outside (or not fully inside) ZIM file.
[ERROR] ZIM file's low level structure is invalid
[INFO] Avoiding redundant checksum test (already performed by the integrity check).
[INFO] Checking metadata...
[INFO] Searching for Favicon...
[INFO] Searching for main page...
[INFO] Verifying Articles' content...
[INFO] Searching for redundant articles...
Verifying Similar Articles for redundancies...
[INFO] Checking for redirect loops...
[ERROR] Invalid low-level structure:
[ERROR] Invalid internal links found:
The following links:
- precompiled.js 
(precompiled.js) were not found in article home
The following links:
- precompiled.js
(precompiled.js) were not found in article home.html
[INFO] Overall Test Status: Fail
[INFO] Total time taken by zimcheck: <3 seconds. 

Thanks for reading, would welcome any advice!

[rgaudin]

kiwix-serve will be easier to diagnose. Can you show the output of the web browser's debug console?