Ruby on rails 启动rails服务器时出错，加载gem simple_表单时出错

我正忙着在我的windows电脑上安装railsinstaller。有人，请帮助我

path/to/dir/runtime.rb:89:在“require中的块（2个级别）救援”中：尝试加载gem“simple_form”时出错。（绑定器：：GemRequireError） Gem加载错误为：未初始化的常量ActionView:：Helpers:：ActiveModelHelper

gem加载错误的回溯跟踪为：

C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action
_view/helpers.rb:40:in `<module:Helpers>'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action
_view/helpers.rb:4:in `<module:ActionView>'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action
_view/helpers.rb:3:in `<top (required)>'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action
_view/base.rb:5:in `require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action
_view/base.rb:5:in `<top (required)>'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/simple_form-3.1.0/lib/simpl
e_form/action_view_extensions/form_helper.rb:69:in `<top (required)>'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/simple_form-3.1.0/lib/simpl
e_form.rb:2:in `require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/simple_form-3.1.0/lib/simpl
e_form.rb:2:in `<top (required)>'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:86:in `require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:86:in `block (2 levels) in require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:81:in `each'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:81:in `block in require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:70:in `each'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:70:in `require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler.
rb:102:in `require'
C:/Sites/todo/config/application.rb:7:in `<top (required)>'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands/commands_tasks.rb:78:in `require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands/commands_tasks.rb:78:in `block in server'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands/commands_tasks.rb:75:in `tap'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands/commands_tasks.rb:75:in `server'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands/commands_tasks.rb:39:in `run_command!'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands.rb:17:in `<top (required)>'
bin/rails:4:in `require'
bin/rails:4:in `<main>'
Bundler Error Backtrace:
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler/runtime.rb:85:in `block (2 levels) in require'
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler/runtime.rb:81:in `each'
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler/runtime.rb:81:in `block in require'
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler/runtime.rb:70:in `each'
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler/runtime.rb:70:in `require'
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler.rb:102:in `require'
        from C:/Sites/todo/config/application.rb:7:in `<top (required)>'
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands/commands_tasks.rb:78:in `require'
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands/commands_tasks.rb:78:in `block in server'
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands/commands_tasks.rb:75:in `tap'
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands/commands_tasks.rb:75:in `server'
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
        from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands.rb:17:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action
_查看/帮助。rb:40:in`'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action
_view/helpers.rb:4:in`'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action
_view/helpers.rb:3:in`'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action
_view/base.rb:5:in'require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/actionview-4.2.0/lib/action
_view/base.rb:5:in`'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/simple\u form-3.1.0/lib/simple
e_form/action\u view\u extensions/form\u helper.rb:69:in`'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/simple\u form-3.1.0/lib/simple
e_form.rb:2:in'require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/simple\u form-3.1.0/lib/simple
e_form.rb:2:in`'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:86:in'require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:86:在'require中的块（2个级别）'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:81:in'each'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:81:在'block in require'中
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:70:in'each'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler/
runtime.rb:70:in'require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5/lib/bundler。
rb:102:在'require'中
C:/Sites/todo/config/application.rb:7:in`'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands/commands_tasks.rb:78:in'require'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands/commands_tasks.rb:78:in'block in server'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands/commands_tasks.rb:75:in'tap'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands/commands_tasks.rb:75:in'server'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands/commands_tasks.rb:39:in'run_command！'
C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0/lib/rails/co
mmands.rb:17:in`'
箱子/轨道：4:在'require'中
箱子/轨道：4:in`'
捆绑程序错误回溯：
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler/runtime.rb:85:in`require中的block（2个级别）'
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler/runtime.rb:81:in'each'
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler/runtime.rb:81:in'block in require'
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler/runtime.rb:70:in'each'
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler/runtime.rb:70:in'require'
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.12.5
/lib/bundler.rb:102:in'require'
从C:/Sites/todo/config/application.rb:7:in`'
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands/commands_tasks.rb:78:in'require'
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands/commands\u tasks.rb:78:in`block in server'
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands/commands_tasks.rb:75:in'tap'
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands/commands_tasks.rb:75:in'server'
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands/commands_tasks.rb:39:in'run_command！'
来自C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.0
/lib/rails/commands.rb:17:in`'
从箱子/轨道：4:in“require”
从箱子/轨道：4:in`'

您是否运行生成器

rails生成简单表单：安装

？是否运行生成器

rails生成简单表单：安装

？