These seems a problem related with yajl-ruby gem and activesupport.
15-38-13 14:38:47 | INFO | ZSS::CLIENT - Request 8148e37e-b485-459a-8ed9-e204ec1b37f6 sent to PONG:*#PING with 1.0s timeout
/Users/peter/.rvm/gems/ruby-2.1.2@zss-service-sample/gems/activesupport-4.2.0/lib/active_support/core_ext/object/json.rb:37:in to_json_with_active_support_encoder': uninitialized constant ActiveSupport::JSON (NameError) from /Users/peter/.rvm/gems/ruby-2.1.2@zss-service-sample/gems/yajl-ruby-1.2.1/lib/yajl.rb:73:inencode'
from /Users/peter/.rvm/gems/ruby-2.1.2@zss-service-sample/gems/yajl-ruby-1.2.1/lib/yajl.rb:73:in encode' from /Users/peter/.rvm/gems/ruby-2.1.2@zss-service-sample/gems/logger_facade-0.3.1/lib/logger_facade/plugins/logstash.rb:41:inlog'
These seems a problem related with yajl-ruby gem and activesupport.
15-38-13 14:38:47 | INFO | ZSS::CLIENT - Request 8148e37e-b485-459a-8ed9-e204ec1b37f6 sent to PONG:*#PING with 1.0s timeout /Users/peter/.rvm/gems/ruby-2.1.2@zss-service-sample/gems/activesupport-4.2.0/lib/active_support/core_ext/object/json.rb:37:in
to_json_with_active_support_encoder': uninitialized constant ActiveSupport::JSON (NameError) from /Users/peter/.rvm/gems/ruby-2.1.2@zss-service-sample/gems/yajl-ruby-1.2.1/lib/yajl.rb:73:in
encode' from /Users/peter/.rvm/gems/ruby-2.1.2@zss-service-sample/gems/yajl-ruby-1.2.1/lib/yajl.rb:73:inencode' from /Users/peter/.rvm/gems/ruby-2.1.2@zss-service-sample/gems/logger_facade-0.3.1/lib/logger_facade/plugins/logstash.rb:41:in
log'