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