When I start the server in Ruby On Rails it exits

Question

This is the error message in 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 doesn't have binaries for Ruby 2.2.1 available for the mingw32 platform due to some problems with cross compiling Ruby 2.2.1 for the rake-compiler-dev-box.

Since Nokogiri doesn't natively compile on Windows, the only fix is to downgrade to Ruby 2.1.5. Once the next patch level of Ruby 2.2 is released hopefully the problem will be solved.

Answer 2

try to

rvm ruby-2.2.0 gem update --system

Looks like ur nokogiri path broken

ps edited on ur rvm version