I was getting this error after hooking up Amazon Cloudfront CDN for RubyPlus. Here are the steps to make Rails 4.2.5 use custom fonts.
1. In:
config/application.rb
config.assets.paths << Rails.root.join("app", "assets", "fonts")
2. In your .scss files, change the src to use font-url not url:
@font-face {
font-family: 'icofonts';
src:font-url('fonts/icofonts.ttf') format('truetype');
font-weight: normal;
font-style: normal;
}
3. In Moonshine source code, file apache.rb, add 'application/x-font-ttf', 'font/ttf' to the end of the gzip_types:defaults = {
:gzip_types => ['text/html', 'text/plain', 'text/xml', 'text/css', 'text/javascript', 'text/json', 'application/x-javascript', 'application/javascript', 'application/json', 'application/x-font-ttf', 'font/ttf' ]
Reference:
Custom Web Fonts and the Rails Asset Pipeline