Ruby on rails 更新Ruby后发生Rails服务器错误（名称错误）

我将Ruby从2.0.0更新为2.2.2，因为我认为这可能会导致Heroku出现问题，但现在当我尝试启动rails服务器时，我发现一个名称错误，而且因为我是RoR新手，我不知道是什么导致了它

这是我的日志：

C:\row\dev\my_app>rails s
C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_view/helpers.
rb:40:in `<module:Helpers>': uninitialized constant ActionView::Helpers::ActiveM
odelHelper (NameError)
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers.rb:4:in `<module:ActionView>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers.rb:3:in `<top (required)>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/base.rb:5:in `<top (required)>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/view_paths.rb:1:in `<top (required)>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/abstrac
t_controller/rendering.rb:4:in `<top (required)>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_
controller/base.rb:204:in `<class:Base>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_
controller/base.rb:164:in `<module:ActionController>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_
controller/base.rb:5:in `<top (required)>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/responders-2.1.0/lib/respond
ers/controller_method.rb:37:in `<top (required)>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/responders-2.1.0/lib/respond
ers.rb:15:in `<module:Responders>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/responders-2.1.0/lib/respond
ers.rb:9:in `<top (required)>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/devise-3.5.1/lib/devise.rb:7
:in `<top (required)>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
untime.rb:76:in `require'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
untime.rb:76:in `block (2 levels) in require'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
untime.rb:72:in `each'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
untime.rb:72:in `block in require'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
untime.rb:61:in `each'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
untime.rb:61:in `require'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler.r
b:134:in `require'
        from C:/row/dev/david_youtube/config/application.rb:7:in `<top (required
)>'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands/commands_tasks.rb:78:in `require'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands/commands_tasks.rb:78:in `block in server'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands/commands_tasks.rb:75:in `tap'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands/commands_tasks.rb:75:in `server'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands/commands_tasks.rb:39:in `run_command!'
        from C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands.rb:17:in `<top (required)>'
        from bin/rails:4:in `require'
        from bin/rails:4:in `<main>'

C:\row\dev\my\u app>rails
C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action\u view/helpers。
rb:40:in`：未初始化的常量ActionView:：Helpers:：ActiveM
odelHelper（名称错误）
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers.rb:4:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/helpers.rb:3:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
view/base.rb:5:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionview-4.2.1/lib/action_
查看/查看路径。rb:1:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/absrac
t_controller/rendering.rb:4:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_
controller/base.rb:204:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_
controller/base.rb:164:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_
controller/base.rb:5:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/responders-2.1.0/lib/respond
ers/controller_方法。rb:37:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/responders-2.1.0/lib/respond
ers.rb:15:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/responders-2.1.0/lib/respond
ers.rb:9:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/designe-3.5.1/lib/designe.rb:7
：在`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
时间。rb:76：在“需要”中
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
untime.rb:76：在“要求中的块（2个级别）”中
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
截至时间。rb:72:in‘each’
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
untime.rb:72:in'block in require'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
截至时间。rb:61:in'each'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler/r
时间.rb:61:in'require'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/bundler-1.10.5/lib/bundler.r
b:134:在“要求”中
来自C:/row/dev/david_youtube/config/application.rb:7:in`'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
命令/命令\u任务.rb:78:in'require'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands/commands\u tasks.rb:78:in'block in server'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
命令/命令\u任务.rb:75:in'tap'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
命令/命令\u任务.rb:75:in'server'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
命令/命令\u任务.rb:39:in'run\u命令！'
来自C:/row/Ruby22/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/com
mands.rb:17:in`'
从箱子/轨道：4:in“require”
从箱子/轨道：4:in`'

问题似乎是我安装了两个版本的Ruby。在删除了所有版本的Ruby并完成了2.2.2的干净安装之后，我能够启动Rails服务器