WeasyPrint: Can't load font using local()

Running from the default terminal on Windows 10, if I, after installing a custom font like Google’s Noto Sans JP, use this CSS in my HTML: @font-face{ font-family: "Noto Sans JP"; src: local("Noto Sans JP") } WeasyPrint will throw a “WARNING: Font-face “Noto Sans JP” cannot be loaded.”, and if there are a large number of CJK characters, produce a PDF with mojibake like these:

If I reduce the amount of CJK characters enough, the PDF will be rendered okay, but with the default system font (Meiryo).

But if I put url() instead of local() and update my CSS to: @font-face{ font-family: "Noto Sans JP"; src: url("NotoSansJP-Regular.otf") } Then the HTML is rendered as it should be, with the custom font.