Security issues

Hey,
I am using this theme to develop a site everything is okey but the only problem is it not stooping loading in . I inspect that issue and i found blockquote Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://fonts.gstatic.com/s/montserrat/v5/IQHow_FEYlDC4Gzy_m8fcgFhaRv2pGgT5Kf0An0s4MM.woff. This can be fixed by moving the resource to the same domain or enabling CORS. blockquote

I did not use any plugin , so whatever happening that happening for the theme.
Now i need to fix that, Please let me know what to do…