Rails 5：运行时弹簧出错设计：安装答案

【问题标题】：Rails 5: Error with spring when run devise:installRails 5：运行时弹簧出错设计：安装
【发布时间】：2020-01-19 21:50:15
【问题描述】：

我正在尝试使用 Rails 制作 API

Ruby 版本：ruby 2.5.0p0（2017-12-25 修订版 61468）[x86_64-linux]
Rails 版本：Rails 5.2.4.1

我将设计 gem 添加到 gemfile 并运行包，没有错误。当我尝试运行$ rails generate devise: install时，出现了这个错误：

/home/isaac/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:122:in `ensure in preload': undefined method `application' for Rails:Module (NoMethodError)
        from /home/isaac/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:126:in `preload'
        from /home/isaac/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:157:in `serve'
        from /home/isaac/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:145:in `block in run'
        from /home/isaac/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:139:in `loop'
        from /home/isaac/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application.rb:139:in `run'
        from /home/isaac/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.1.0/lib/spring/application/boot.rb:19:in `<top (required)>'
        from /home/isaac/.rbenv/versions/2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
        from /home/isaac/.rbenv/versions/2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
        from -e:1:in `<main>'

【问题讨论】：

标签： ruby-on-rails ruby devise

【解决方案1】：

尝试使用以下命令重启 spring 服务器：

bin/spring stop

bin/spring start

【讨论】：