LoadError: no such file to load -- bundler
require at org/jruby/RubyKernel.java:940
require at C:/jruby-9.0.0.0/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:54
setup! at C:/Users/ryan.dai/Desktop/logstash-1.5.3/lib/bootstrap/bundler.rb:43
at c:/Users/ryan.dai/Desktop/logstash-1.5.3/lib/bootstrap/environment.rb:46