Ubuntu 15.10 Ruby -v: 2.3.0 Rails -v: 4.2.6 Rvm -v: 1.27.0 Whe I run WebsocketRails['channer'].trigger('event', 'content') occurs /.rvm/gems/ruby-2.3.0/gems/eventmachine-1.2.0.1/lib/eventmachine.rb...