Comment 1 for bug 1697681

This could be the same issue as bug #1508928 / bug #1495386 (they are in fact caused by fonts with certain malformed special characters in their font name).

I recently pushed a fix for that issue. Could you please try if a development build, e.g. https://download.tuxfamily.org/inkscape/win64/inkscape_0.92.x_r15429_win64_MSYS2.7z fixes the bug for you?

If it works running inkscape.com from console should print a warning that mentions the conflicting font.