How can I set fonts path

Started GET "/assets/smartadmin/img/mybg.png" for 127.0.0.1 at 2015-12-04 19:32:16 +0530

Started GET "/assets/fonts/fontawesome-webfont.woff2?v=4.4.0" for 127.0.0.1 at 2015-12-04 19:32:16 +0530

AbstractController::ActionNotFound (The action 'fonts' could not be found for AssetsController): actionpack (4.2.4) lib/abstract_controller/base.rb:132:in process' actionview (4.2.4) lib/action_view/rendering.rb:30:inprocess' actionpack (4.2.4) lib/action_controller/metal.rb:196:in dispatch' actionpack (4.2.4) lib/action_controller/metal/rack_delegation.rb:13:indispatch' actionpack (4.2.4) lib/action_controller/metal.rb:237:in block in action' actionpack (4.2.4) lib/action_dispatch/routing/route_set.rb:76:incall' actionpack (4.2.4) lib/action_dispatch/routing/route_set.rb:76:in dispatch' actionpack (4.2.4) lib/action_dispatch/routing/route_set.rb:45:inserve' actionpack (4.2.4) lib/action_dispatch/journey/router.rb:43:in block in serve' actionpack (4.2.4) lib/action_dispatch/journey/router.rb:30:ineach' actionpack (4.2.4) lib/action_dispatch/journey/router.rb:30:in serve' actionpack (4.2.4) lib/action_dispatch/routing/route_set.rb:821:incall' rack (1.6.4) lib/rack/etag.rb:24:in `call'