flatpak: MOBI conversion gets stuck ("No such file or directory" error for .mobi files)

[Pyrix25633]

Describe the bug
When converting to MOBI/AZW3 or MOBI+EPUB the process is stuck at "Processing MOBI files". When converting to EPUB a hidden file (..epub-) is created at the source directory if you don't select it, either way and it doesn't show on kindle.
Also when aborting, it just stays there, stuck.

To Reproduce
Steps to reproduce the behavior:
Convert .cbz or .cbr file to MOBI/AZW3 or MOBI+EPUB or to EPUB.

Expected behavior
It should finish converting or create an EPUB file that the kindle is able to read.

Screenshots
Defaults, no manga mode, stretch/upscale.

Desktop (please complete the following information):

• OS: Zorin OS 17 -> Ubuntu 22.04, flathub kcc
• Device: Kindle Paperwhite 7th gen. 5.16.2.1.1

[axu2]

I don't use flatpak, but maybe this helps? https://github.com/ciromattia/kcc/wiki/Installation#linux

[catsout]

Please use flatseal and add host filesystem permission.

[catsout]

Make sure your files that imported in kcc are not started with /run/user/1000/doc.

[winstonma]

@Pyrix25633

Please check the following

1. Please check if there is kindlegen executable in the following directory

$ ls ~/.var/app/io.github.ciromattia.kcc/data
kindlegen

2. Also please try to run KCC using terminal, this way you can capture the logs for everyone to troubleshoot. Please run the following command, redo what you have done, and then capture the error log.

$ flatpak run io.github.ciromattia.kcc

Hope this helps

[Pyrix25633]

Make sure your files that imported in kcc are not started with /run/user/1000/doc.

They do, I thought it was strange, but didn't manage solve that.

[Pyrix25633]

Ok, using flatseal to manage permissions it works, you should add it to the installation wiki.

[axu2]

@Pyrix25633 Does the section here to use flatseal make sense or does a flatpak user need more detail than that? https://github.com/ciromattia/kcc/wiki/Installation#linux

[Pyrix25633]

I think it's perfect, maybe make it stand out. Flatseal has an intuitive and easy to use interface, so no additional information is needed.
👍

[axu2]

@darodi Just FYI in case it's relevant to Steam Deck