Datatable export to pdf

Hi, i try to export my datatable on pdf file but i have this error:

http://cdn.webix.com/edge/fonts/PTS-webfont.ttf Failed to load
What means?
i try to export in PNG or Excel and not have any problem.
Thanks

Hello,

Please, ensure that you use the latest version of Webix. Now the needed font is located at http://cdn.webix.com/extras/pt-sans.regular.ttf.

This font is required by a third-party library Webix uses for PDF export.

If you don’t want to rely on cdn you can copy the necessary files locally.