Can't download a specific chapter

[Tristan-Hess]

What happened ?

When downloading this manga (https://mangadex.org/title/bfed99f9-0f35-4173-bc04-f625d340d3f7/majo-to-kyurasu), chapter 6.1 is not possible to download.

Here's what it says:
Traceback (most recent call last):
File "mangadex_downloader\cli_init_.py", line 104, in _main
File "mangadex_downloader\cli\download.py", line 34, in download
File "mangadex_downloader\cli\url.py", line 199, in call
File "mangadex_downloader\cli\url.py", line 113, in download_manga
File "mangadex_downloader\main.py", line 206, in download
File "mangadex_downloader\main.py", line 156, in download_manga
File "mangadex_downloader\format\base.py", line 925, in main
File "mangadex_downloader\format\base.py", line 874, in download_single
File "mangadex_downloader\format\base.py", line 101, in get_images
File "mangadex_downloader\chapter.py", line 73, in fetch
KeyError: 'chapter'

What did you expect to happen ?

Download the chapt'

OS version

Windows 11

App version

mangadex-downloader v3.1.4 (https://github.com/mansuf/mangadex-downloader)
Python: 3.13.3
arch: x64
bundled executable: yes

Installation origin

Github releases

Installation origin (other sources)

No response

Reproducible command

?

Additional context

No response