ruby-on-rails – 在ubuntu 14.04上使用passenger-install-nginx-module的Bundler错误

我正在ubuntu 14.04上安装乘客Nginx&ruby2.2.4. passenger-install-Nginx-module存在bundler错误

  $passenger-install-Nginx-module
    /home/ubuntu/.rvm/gems/ruby-2.2.4/gems/bundler-1.13.1/lib/bundler/rubygems_ext.rb:45:in `full_gem_path': uninitialized constant Bundler::Plugin::API::source (NameError)
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:144:in `block in full_require_paths'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:143:in `map'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:143:in `full_require_paths'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:76:in `contains_requirable_file?'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:949:in `block in find_in_unresolved'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:949:in `each'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:949:in `find_all'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:949:in `find_in_unresolved'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:74:in `require'
            from /home/ubuntu/.rvm/gems/ruby-2.2.4/gems/bundler-1.13.1/lib/bundler/plugin/api/source.rb:2:in `required)>'
            from /home/ubuntu/.rvm/gems/ruby-2.2.4/gems/bundler-1.13.1/lib/bundler/rubygems_ext.rb:45:in `full_gem_path'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:144:in `block in full_require_paths'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:143:in `map'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/basic_specification.rb:143:in `full_require_paths'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1370:in `add_self_to_load_path'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1283:in `activate'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_gem.rb:67:in `block in gem'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_gem.rb:66:in `synchronize'
            from /home/ubuntu/.rvm/rubies/ruby-2.2.4/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_gem.rb:66:in `gem'
            from /home/ubuntu/.rvm/gems/ruby-2.2.4/bin/passenger-install-Nginx-module:22:in `

在此之前,已经安装了gem乘客(v5.0.30)和rails 4.2.0.是什么导致错误？