It appears "yetr-hm" is not a recognized or publicly available typeface. It could be:
Adobe Acrobat or Foxit Reader might display a dialog: "Cannot find or create font 'yetr-hm'. Substituting with Courier." This happens when a PDF embeds a font with a damaged internal naming table. yetr-hm font
%!Adobe-FontList 1.09 %BeginFont Handler:DirectoryHandler FontType:TrueType FontName:H2gprM FamilyName:HYGraphic-Medium StyleName: github.com It appears "yetr-hm" is not a recognized or
