我的操作系统是Windows 10
今天我安装了Ruby（ruby 2.2.3p173（2015-08-18修订版51636）[x64-mingw32]）和rails gem（rails 4.2.4）
我正在关注有关rails的一系列教程视频中的详细信息。 我安装了以下版本的myqsl 2（并在重新安装的情况下重新安装）mysql2-0.4.1-x64-mingw32
这个问题适用于按照教程上的说明以下列方式创建的名为simple_cms的应用程序
rails new simple_cms -d mysql
我有：
但输入
rails server
在我的项目simple_cms的根目录中。 WEBrick甚至没有开始
作为示例，在其他类似问题here和here中，两位查询者都会收到以下内容
=> Booting WEBrick
=> Rails 3.2.13 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
等..etc ....在WEBrick失败之前。但是我没有得到这么远，因为没有提到与WEBrick有任何关系。以下是我在输入rails server命令后收到的错误消息：
simple_cms>rails server
C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview- 4.2.4/lib/action_view/helpers.rb:40:in `<module:Helpers>': uninitialized constant ActionView::Helpers::ActiveModelHelper (NameError)
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers.rb:4:in `<module:ActionView>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/helpers.rb:3:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/base.rb:5:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_view/base.rb:5:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/web-console-2.2.1/lib/web_console/template.rb:7:in `<class:Template>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/web-console-2.2.1/lib/web_console/template.rb:6:in `<module:WebConsole>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/web-console-2.2.1/lib/web_console/template.rb:1:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/web-console-2.2.1/lib/web_console.rb:12:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/web-console-2.2.1/lib/web_console.rb:12:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/web-console-2.2.1/lib/web-console.rb:1:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/web-console-2.2.1/lib/web-console.rb:1:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:76:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:72:in `each'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:72:in `block in require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:61:in `each'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/runtime.rb:61:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler.rb:134:in `require'
from C:/Users/Lizanne/Documents/Code/Sites/simple_cms/config/application.rb:7:in `<top (required)>'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:78:in `require'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:78:in `block in server'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `tap'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `server'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands.rb:17:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'
我可以做些什么来纠正这种情况，因为我现在正在一遍又一遍地尝试相同的事情，并且正如爱因斯坦正确地指出精神错乱的定义一遍又一遍地做同样的事情并期待不同的结果
我安装了以下宝石
actionmailer (4.2.4)
actionpack (4.2.4)
actionview (4.2.4)
activejob (4.2.4)
activemodel (4.2.4)
activerecord (4.2.4)
activesupport (4.2.4)
arel (6.0.3)
bigdecimal (1.2.7, 1.2.6)
binding_of_caller (0.7.2)
builder (3.2.2)
bundler (1.10.6)
byebug (6.0.2)
coffee-rails (4.1.0)
coffee-script (2.4.1)
coffee-script-source (1.9.1.1)
debug_inspector (0.0.2)
erubis (2.7.0)
execjs (2.6.0)
globalid (0.3.6)
i18n (0.7.0)
io-console (0.4.3)
jbuilder (2.3.2)
jquery-rails (4.0.5)
json (1.8.3, 1.8.1)
loofah (2.0.3)
mail (2.6.3)
mime-types (2.6.2)
mini_portile (0.6.2)
minitest (5.8.2)
multi_json (1.11.2)
mysql2 (0.4.1 x64-mingw32)
nokogiri (1.6.6.2 x64-mingw32)
power_assert (0.2.5)
psych (2.0.15, 2.0.8)
rack (1.6.4)
rack-test (0.6.3)
rails (4.2.4)
rails-deprecated_sanitizer (1.0.3)
rails-dom-testing (1.0.7)
rails-html-sanitizer (1.0.2)
railties (4.2.4)
rake (10.4.2)
rdoc (4.2.0)
sass (3.4.19)
sass-rails (5.0.4)
sdoc (0.4.1)
sprockets (3.4.0)
sprockets-rails (2.3.3)
test-unit (3.1.5)
thor (0.19.1)
thread_safe (0.3.5)
tilt (2.0.1)
turbolinks (2.5.3)
tzinfo (1.2.2)
tzinfo-data (1.2015.7)
uglifier (2.7.2)
web-console (2.2.1)
非常感谢提前