Cannot compile curent master (because of doc) (Bug #937)

Cloning the master branch from git and running make gives the following error :

'auto-multiple-choice.en.tex' successfully built
perl -pi -e "s,b'<:',<:,g ; s,b':>',:>,g " auto-multiple-choice.en.tex
rsvg-convert -f pdf img_src/important.svg -o img_pdf/important.pdf
Environment variable $SOURCE_DATE_EPOCH: cannot parse integer from empty string
make[2]: *** [Makefile:55 : img_pdf/important.pdf] Erreur 1

If I run rsvg-convert -f pdf img_src/important.svg -o img_pdf/important.pdf (and for the other svg files), this error is eschewed, but I later get an error while compilong the documentation (because of some Japanese font, it seems) :

(/opt/yann/texlive/texmf-dist/tex/xelatex/xecjk/xeCJK.cfg))
kpathsea: Running mktextfm IPAexMincho/OT
/opt/yann/texlive/texmf-dist/web2c/mktexnam: Could not map source abbreviation O for OT.
/opt/yann/texlive/texmf-dist/web2c/mktexnam: Need to update /opt/yann/texlive/texmf-dist/fonts/map/fontname/special.map?
mktextfm: Running mf-nowin -progname=mf \mode:=ljfour; mag:=1; ; nonstopmode; input OT
This is METAFONT, Version 2.71828182 (TeX Live 2024) (preloaded base=mf)

kpathsea: Running mktexmf OT
! I can't find file `OT'.
<*> \mode:=ljfour; mag:=1; ; nonstopmode; input OT

Please type another input file name
! Emergency stop.
<*> \mode:=ljfour; mag:=1; ; nonstopmode; input OT

Transcript written on mfput.log.
grep: OT.log: Aucun fichier ou dossier de ce nom
mktextfm: `mf-nowin -progname=mf \mode:=ljfour; mag:=1; ; nonstopmode; input OT' failed to make OT.tfm.
kpathsea: Appending font creation commands to missfont.log.

! Package fontspec Error: 
(fontspec)                The font "IPAexMincho" cannot be found; this may
(fontspec)                be but usually is not a fontspec bug. Either there
(fontspec)                is a typo in the font name/file, the font is not
(fontspec)                installed (correctly), or there is a bug in the
(fontspec)                underlying font loading engine (XeTeX/luaotfload).

For immediate help type H <return>.
 ...                                              

l.37   \setCJKsansfont
                      {IPAexGothic}%
No pages of output.
Transcript written on auto-multiple-choice.en.log.

BTW, is there a way to compile AMC without the doc ?