Error on reading font .ttf

[IagoBeuller]

The following font file cannot be read:
ITC_STONE_SERIF_ITC--STOSFSCM_bold.zip

Error:

...line 1862, in read_font
     raise PixieError(take_error())
 pixie.pixie.PixieError: Unexpected error reading font data, EOF

Also please, add a fallback font option for rendering glyphs not contained in the main font file, like "●".
Main Font File: Stone Serif Regular.zip