Dear Hraban and Wolfgang,

Thank you for your testing.

I installed Noto Sans KR fonts in my font folder in Mac.
And check the list of fonts whose name includes ‘notosans*kr*’ as you said”

 mtxrun --script fonts --list --all --pattern='notosans*kr*’

And got the following list.

notosansbatakregular         notosansbatak         notosansbatakregular         /System/Library/Fonts/Supplemental/NotoSansBatak-Regular.ttf
notosanscjkkrblack           notosanscjkkr         notosanscjkkrblack           /Users/graph/Library/Fonts/NotoSansCJKkr-Black.otf
notosanscjkkrbold            notosanscjkkr         notosanscjkkrbold            /Users/graph/Library/Fonts/NotoSansCJKkr-Bold.otf
notosanscjkkrdemilight       notosanscjkkr         notosanscjkkrdemilight       /Users/graph/Library/Fonts/NotoSansCJKkr-DemiLight.otf
notosanscjkkrlight           notosanscjkkr         notosanscjkkrlight           /Users/graph/Library/Fonts/NotoSansCJKkr-Light.otf
notosanscjkkrmedium          notosanscjkkr         notosanscjkkrmedium          /Users/graph/Library/Fonts/NotoSansCJKkr-Medium.otf
notosanscjkkrnormal          notosanscjkkr         notosanscjkkrthin            /Users/graph/Library/Fonts/NotoSansCJKkr-Thin.otf
notosanscjkkrregular         notosanscjkkr         notosanscjkkrregular         /Users/graph/Library/Fonts/NotoSansCJKkr-Regular.otf
notosanscjkkrthin            notosanscjkkr         notosanscjkkrthin            /Users/graph/Library/Fonts/NotoSansCJKkr-Thin.otf
notosanskrblack              notosanskr            notosanskrblack              /Users/graph/Library/Fonts/NotoSansKR-Black.ttf
notosanskrbold               notosanskr            notosanskrbold               /Users/graph/Library/Fonts/NotoSansKR-Bold.ttf
notosanskrextrabold          notosanskr            notosanskrextrabold          /Users/graph/Library/Fonts/NotoSansKR-ExtraBold.ttf
notosanskrextralight         notosanskr            notosanskrextralight         /Users/graph/Library/Fonts/NotoSansKR-ExtraLight.ttf
notosanskrlight              notosanskr            notosanskrlight              /Users/graph/Library/Fonts/NotoSansKR-Light.ttf
notosanskrmedium             notosanskr            notosanskrmedium             /Users/graph/Library/Fonts/NotoSansKR-Medium.ttf
notosanskrnormal             notosanskr            notosanskrregular            /Users/graph/Library/Fonts/NotoSansKR-Regular.ttf
notosanskrregular            notosanskr            notosanskrregular            /Users/graph/Library/Fonts/NotoSansKR-Regular.ttf
notosanskrsemibold           notosanskr            notosanskrsemibold           /Users/graph/Library/Fonts/NotoSansKR-SemiBold.ttf
notosanskrthin               notosanskr            notosanskrthin               /Users/graph/Library/Fonts/NotoSansKR-Thin.ttf
notosansmeeteimayekregular   notosansmeeteimayek   notosansmeeteimayekregular   /System/Library/Fonts/Supplemental/NotoSansMeeteiMayek-Regular.ttf
notosansmonocjkkrbold        notosansmonocjkkr     notosansmonocjkkrbold        /Users/graph/Library/Fonts/NotoSansMonoCJKkr-Bold.otf
notosansmonocjkkrnormal      notosansmonocjkkr     notosansmonocjkkrregular     /Users/graph/Library/Fonts/NotoSansMonoCJKkr-Regular.otf
notosansmonocjkkrregular     notosansmonocjkkr     notosansmonocjkkrregular     /Users/graph/Library/Fonts/NotoSansMonoCJKkr-Regular.otf
notosanstakri                notosanstakri         notosanstakriregular         /System/Library/Fonts/Supplemental/NotoSansTakri-Regular.ttf
notosanstakrinormal          notosanstakri         notosanstakriregular         /System/Library/Fonts/Supplemental/NotoSansTakri-Regular.ttf
notosanstakriregular         notosanstakri         notosanstakriregular         /System/Library/Fonts/Supplemental/NotoSansTakri-Regular.ttf

There is a font family “notosanskr”.

I modify the font definition in the rest file as follows(just remove CJK):

\definefontfamily[notoFont][ss][Noto Sans KR]
[ it={style:regular,features:{*,slanted}},
sl={style:regular,features:{*,slanted}},
bi={style:bold,features:{*,slanted}},force=yes]

However, when I run the test file, I got the same error as before.

...
fonts > checking > char 여 (U+0C5EC) in font 'TeXGyrePagellaMath-Regular-2' with id 6: missing fonts > checking > char 기 (U+0AE30) in font 'TeXGyrePagellaMath-Regular-2' with id 6: missing font
…

Why does it look for Math font for \Title and \SlideTitle?

Thanks for reading.

Best regards,

Dalyoung