Ruby on rails 方法“运行时缺少错误”；rails服务器"；

我刚刚启动了一个新的rails应用程序，但它不允许我启动服务器，在键入“rails s”后，控制台就把我吐了出来

/Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/railtie/configuration.rb:95:in `method_missing': undefined method `load_defaults' for #<Rails::Application::Configuration:0x007fa393f7db20> (NoMethodError)
from /Users/user/Desktop/MiProyecto/Portafolio/config/application.rb:12:in `<class:Application>'
from /Users/user/Desktop/MiProyecto/Portafolio/config/application.rb:10:in `<module:Portafolio>'
from /Users/user/Desktop/MiProyecto/Portafolio/config/application.rb:9:in `<top (required)>'
from /Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands/commands_tasks.rb:78:in `require'
from /Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands/commands_tasks.rb:78:in `block in server'
from /Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands/commands_tasks.rb:75:in `tap'
from /Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands/commands_tasks.rb:75:in `server'
from /Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands.rb:17:in `<top (required)>'
from bin/rails:9:in `require'
from bin/rails:9:in `<main>'

/Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/railtie/configuration.rb:95:in'method_missing'：未定义的方法'load_defaults'（nomethoderor）
from/Users/user/Desktop/MiProyecto/Portafolio/config/application.rb:12:in`'
from/Users/user/Desktop/MiProyecto/Portafolio/config/application.rb:10:in`'
from/Users/user/Desktop/MiProyecto/Portafolio/config/application.rb:9:in`'
from/Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands/commands\u tasks.rb:78:in'require'
from/Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands/commands\u tasks.rb:78:“服务器中的块”中
from/Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands/commands\u tasks.rb:75:in'tap'
from/Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands/commands\u tasks.rb:75:in“server”
from/Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands/commands\u tasks.rb:39:in“run\u command！”
来自/Users/user/.rvm/gems/ruby-2.4.1/gems/railties-4.2.9/lib/rails/commands.rb:17:in`'
从箱子/轨道：9:in“require”
从箱子/轨道：9:in`'

有什么想法吗？ 提前谢谢

---

ps：我已经运行了bundle安装，它运行得非常完美。

检查您启动应用程序的Rails版本。如果您碰巧更改了它，升级或降级了它，那么，请尝试删除Gemfile.lock文件，添加“原始”Rails版本并再次绑定

---

我重现了

“method\u missing”：未定义的方法“load\u defaults”

错误，首先使用5.1.3版本创建一个空白的Rails应用程序，然后将其更改为5.0.1，删除Gemfile.lock并运行

包

这解决了它，您是对的。必须先删除gemfile.lock，然后再绑定。谢谢！。