When I start the server in Ruby On Rails, it exits as soon as it starts, and sometimes it does not even start, it just gives an error

Question

This is the error message on Windows:

C:\Users\USER\Sites\new_cms>rails s C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2-x64-mingw32/lib/nokogir .rb:29:in `require': cannot load such file -- nokogiri/nokogiri (LoadError) from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2-x64-mingw3 /lib/nokogiri.rb:29:in `rescue in <top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2-x64-mingw3 /lib/nokogiri.rb:25:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/loofah-2.0.1/lib/loofah.rb: :in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/loofah-2.0.1/lib/loofah.rb: :in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rails-html-sanitizer-1.0.2/ ib/rails-html-sanitizer.rb:2:in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rails-html-sanitizer-1.0.2/ ib/rails-html-sanitizer.rb:2:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/sanitize_helper.rb:3:in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/sanitize_helper.rb:3:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/text_helper.rb:32:in `<module:TextHelper>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/text_helper.rb:29:in `<module:Helpers>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/text_helper.rb:6:in `<module:ActionView>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/text_helper.rb:4:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/form_tag_helper.rb:18:in `<module:FormTagHelper>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/form_tag_helper.rb:14:in `<module:Helpers>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/form_tag_helper.rb:8:in `<module:ActionView>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/form_tag_helper.rb:6:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/form_helper.rb:4:in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers/form_helper.rb:4:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers.rb:50:in `<module:Helpers>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers.rb:4:in `<module:ActionView>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action view/helpers.rb:3:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.2.4/lib/s rockets/rails/legacy_asset_tag_helper.rb:7:in `<module:LegacyAssetTagHelper>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.2.4/lib/s rockets/rails/legacy_asset_tag_helper.rb:6:in `<module:Rails>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.2.4/lib/s rockets/rails/legacy_asset_tag_helper.rb:4:in `<module:Sprockets>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.2.4/lib/s rockets/rails/legacy_asset_tag_helper.rb:3:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.2.4/lib/s rockets/rails/helper.rb:45:in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.2.4/lib/s rockets/rails/helper.rb:45:in `<module:Helper>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.2.4/lib/s rockets/rails/helper.rb:7:in `<module:Rails>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.2.4/lib/s rockets/rails/helper.rb:6:in `<module:Sprockets>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.2.4/lib/s rockets/rails/helper.rb:5:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.2.4/lib/s rockets/railtie.rb:6:in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.2.4/lib/s rockets/railtie.rb:6:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.1/lib/sass/r ils/railtie.rb:2:in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.1/lib/sass/r ils/railtie.rb:2:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.1/lib/sass/r ils.rb:11:in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.1/lib/sass/r ils.rb:11:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.1/lib/sass-r ils.rb:1:in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.1/lib/sass-r ils.rb:1:in `<top (required)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.8.5/lib/bundler/r ntime.rb:76:in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.8.5/lib/bundler/r ntime.rb:76:in `block (2 levels) in require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.8.5/lib/bundler/r ntime.rb:72:in `each' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.8.5/lib/bundler/r ntime.rb:72:in `block in require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.8.5/lib/bundler/r ntime.rb:61:in `each' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.8.5/lib/bundler/r ntime.rb:61:in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.8.5/lib/bundler.r :134:in `require' from C:/Users/USER/Sites/new_cms/config/application.rb:7:in `<top (requ red)>' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co mands/commands_tasks.rb:78:in `require' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co mands/commands_tasks.rb:78:in `block in server' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co mands/commands_tasks.rb:75:in `tap' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co mands/commands_tasks.rb:75:in `server' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co mands/commands_tasks.rb:39:in `run_command!' from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co mands.rb:17:in `<top (required)>' from bin/rails:4:in `require' from bin/rails:4:in `<main>' C:\Users\USER\Sites\new_cms> 

Answer 1

Nokogiri does not have binaries for Ruby 2.2.1 available for the mingw32 platform due to some problems with cross-compiling Ruby 2.2.1 for rake-compiler-dev-box .

Since Nokogiri is not initially compiled on Windows, the only fix is ​​to downgrade to Ruby 2.1.5 . As soon as the next Ruby 2.2 patch level is released, the problem will be resolved.

Answer 2

try

 rvm ruby-2.2.0 gem update --system 

It looks like ur nokogiri path is broken.

ps edited in ur rvm version