Exception during transcoding – Unable to build font

Exception during transcoding: Cannot embed local font ‘assets/fonts/myfont_rg.ttf’ as CFF. The CSS @font-face ‘local()’ syntax is not supported. Please specify a path directly to a font file using the ‘url()’ syntax. For [Embed] syntax the ‘systemFont’ attribute is not supported. Please specify a path directly to a font file using the ‘source’ attribute.

Solution
Use url() instead of local();

Before

@font-face {
	fontFamily: "MyFont";
	src: local("assets/fonts/font_rg.ttf");
}

After

@font-face {
	fontFamily: "MyFont";
	src: url("assets/fonts/font_rg.ttf");
}