How can i get initial Korean translation of release-notes

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Hello. I read the README.translators file.
I find there is no Korean translation of release-notes.
I run
sudo apt install latexmk python3-distro-info python3-sphinx python3-stemmer
tex-gyre texinfo texlive-fonts-recommended texlive-lang-all
texlive-latex-extra texlive-latex-recommended git
and run
make update-po LANGS=ko

And I got error messages. Help me please.

Error messages are

make update-po LANGS=ko
# Let's keep POT files next to PO files
sphinx-build -M gettext -d build/en source source/locales
Running Sphinx v8.1.3
loading translations [en]... done
Converting `source_suffix = '.rst'` to `source_suffix = {'.rst':
'restructuredtext'}`.
loading pickled environment... done
building [gettext]: targets for 1 template files
reading templates... [100%]
/home/tu/release-notes/source/_templates/layout.html
building [gettext]: targets for 9 source files that are out of date
updating environment: 0 added, 0 changed, 0 removed
reading sources...
looking for now-outdated files... none found
preparing documents... done
copying assets...
copying assets: done
writing output... [100%] whats-new
writing message catalogs... [100%] whats-new
build succeeded.

The message catalogs are in source/locales.
+ LC_ALL=C.UTF-8 LANG=C.UTF-8 sphinx-intl update -d source/locales -p
source/locales -l ko
/bin/sh: 2: sphinx-intl: not found
make: *** [Makefile:198: update-po] Error 127

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<div dir=3D"ltr">Hello. I read the README.translators file.<br>I find there=
 is no Korean translation of release-notes.<br>I run<br>sudo apt install la=
texmk python3-distro-info python3-sphinx python3-stemmer tex-gyre texinfo t=
exlive-fonts-recommended texlive-lang-all texlive-latex-extra texlive-latex=
-recommended git<br>and run<br>make update-po LANGS=3Dko<br><br>And I got e=
rror messages. Help me please.<br><div><br></div><div>Error messages are</d=
iv><br>make update-po LANGS=3Dko<br># Let&#39;s keep POT files next to PO f=
iles<br>sphinx-build -M gettext -d build/en source source/locales<br>Runnin=
g Sphinx v8.1.3<br>loading translations [en]... done<br>Converting `source_=
suffix =3D &#39;.rst&#39;` to `source_suffix =3D {&#39;.rst&#39;: &#39;rest=
ructuredtext&#39;}`.<br>loading pickled environment... done<br>building [ge=
ttext]: targets for 1 template files<br>reading templates... [100%] /home/t=
u/release-notes/source/_templates/layout.html<br>building [gettext]: target=
s for 9 source files that are out of date<br>updating environment: 0 added,=
 0 changed, 0 removed<br>reading sources... <br>looking for now-outdated fi=
les... none found<br>preparing documents... done<br>copying assets... <br>c=
opying assets: done<br>writing output... [100%] whats-new<br>writing messag=
e catalogs... [100%] whats-new<br>build succeeded.<br><br>The message catal=
ogs are in source/locales.<br>+ LC_ALL=3DC.UTF-8 LANG=3DC.UTF-8 sphinx-intl=
 update -d source/locales -p source/locales -l ko<br>/bin/sh: 2: sphinx-int=
l: not found<br>make: *** [Makefile:198: update-po] Error 127</div>

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