[cairo] Some fonts are not rendered

[Vitaly Nikolenko]

Hello,
I'm using fabric.js for both client and server side.

On the server side it is based on node-canvas which uses cairo to generate
images and pdfs out of the html canvas.
We were testing different fonts and found that a couple of them (2 out of
the 20) are not rendered on the server side at all.

What can be the reason for this? Are there any criteria for fonts?

I'm not sure if  i can attach files to the message so i'm posting links
these fonts
http://printdirect.ru/shared/fonts_new/font56ab14bd94284740369318.woff
http://printdirect.ru/shared/fonts_new/font56ab155c2ca95954451436.woff

Please help )
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