Oddly enough, on my own machine, this runs without a problem. When I upload to Amazon, I get an error.
bundle exec rails s
=> Booting WEBrick
=> Rails 4.1.8 application starting in development on
http://0.0.0.0:3000=> Run `rails server -h` for more startup options
=> Notice: server is listening on all interfaces (0.0.0.0). Consider using 127.0.0.1 (--binding option)
=> Ctrl-C to shutdown server
[2015-03-18 17:15:20] INFO WEBrick 1.3.1
[2015-03-18 17:15:20] INFO ruby 2.1.5 (2014-11-13) [x86_64-darwin11.0]
[2015-03-18 17:15:20] INFO WEBrick::HTTPServer#start: pid=58084 port=3000
Started GET "/education/library" for 127.0.0.1 at 2015-03-18 17:15:36 -0400
ActiveRecord::SchemaMigration Load (0.5ms) SELECT "schema_migrations".* FROM "schema_migrations"
Processing by EducationController#library as HTML
Refinery::Videos::Video Load (8.5ms) SELECT "refinery_videos".* FROM "refinery_videos"
Rendered education/library.html.erb within layouts/application (34.5ms)
Rendered vendor/bundle/ruby/2.1.0/bundler/gems/refinerycms-11f8d1eeb45e/core/app/views/refinery/_html_tag.html.erb (1.3ms)
Rendered refinery/_site_bar.html.erb (8.7ms)
Rendered _login.html.erb (0.9ms)
Completed 200 OK in 2709ms (Views: 172.5ms | ActiveRecord: 8.5ms)