kernel_require.rb:54:in `require': cannot load such file -- bundler/setup (LoadError)

 (47-get-parameters) $ bin/rails g migration create_item_params item_id:int key:string value:string
/Users/ms2/.rbenv/versions/2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require': cannot load such file -- bundler/setup (LoadError)
        from /Users/ms2/.rbenv/versions/2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
        from /Users/ms2/dev/projects/jsonone/vendor/bundle/ruby/2.2.0/gems/spring-1.6.0/lib/spring/commands.rb:33:in `<module:Spring>'
        from /Users/ms2/dev/projects/jsonone/vendor/bundle/ruby/2.2.0/gems/spring-1.6.0/lib/spring/commands.rb:4:in `<top (required)>'
        from /Users/ms2/.rbenv/versions/2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
        from /Users/ms2/.rbenv/versions/2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
        from /Users/ms2/dev/projects/jsonone/vendor/bundle/ruby/2.2.0/gems/spring-1.6.0/lib/spring/application.rb:77:in `preload'
        from /Users/ms2/dev/projects/jsonone/vendor/bundle/ruby/2.2.0/gems/spring-1.6.0/lib/spring/application.rb:143:in `serve'
        from /Users/ms2/dev/projects/jsonone/vendor/bundle/ruby/2.2.0/gems/spring-1.6.0/lib/spring/application.rb:131:in `block in run'
        from /Users/ms2/dev/projects/jsonone/vendor/bundle/ruby/2.2.0/gems/spring-1.6.0/lib/spring/application.rb:125:in `loop'
        from /Users/ms2/dev/projects/jsonone/vendor/bundle/ruby/2.2.0/gems/spring-1.6.0/lib/spring/application.rb:125:in `run'
        from /Users/ms2/dev/projects/jsonone/vendor/bundle/ruby/2.2.0/gems/spring-1.6.0/lib/spring/application/boot.rb:18:in `<top (required)>'
        from /Users/ms2/.rbenv/versions/2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
        from /Users/ms2/.rbenv/versions/2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
        from -e:1:in `<main>'

ってなって、なんか困ったけど、下記を拝見して解消。うーん。