我以前试图为应用程序制作一个新的 Rails 后端。当我尝试 cd 进入应用程序时，终端指出：rvm install "ruby-2.6.5"
当我尝试安装它时，出现错误：
运行“__rvm_make -j8”时出错，
所以，我正在尝试切换到另一个以前运行的应用程序，该应用程序以 Rails 作为后端。
我安装了两个 ruby 版本：2.3.7 和 2.6.1 - 2.6.1 是当前版本。
我正在尝试运行 rails 服务器，当我这样做时 - 终端中出现以下错误：
57: from bin/rails:3:in `<main>'
56: from bin/rails:3:in `load'
55: from /Users/yoyotoo/Desktop/flatiron/pets/pets_backend/bin/spring:15:in `<top (required)>'
54: from /Users/yoyotoo/Desktop/flatiron/pets/pets_backend/bin/spring:15:in `require'
53: from /Users/yoyotoo/.rvm/gems/ruby-2.6.1/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `<top (required)>'
52: from /Users/yoyotoo/.rvm/gems/ruby-2.6.1/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `load'
51: from /Users/yoyotoo/.rvm/gems/ruby-2.6.1/gems/spring-2.1.0/bin/spring:49:in `<top (required)>'
50: from /Users/yoyotoo/.rvm/gems/ruby-2.6.1/gems/spring-2.1.0/lib/spring/client.rb:30:in `run'
49: from /Users/yoyotoo/.rvm/gems/ruby-2.6.1/gems/spring-2.1.0/lib/spring/client/command.rb:7:in `call'
48: from /Users/yoyotoo/.rvm/gems/ruby-2.6.1/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `call'
47: from /Users/yoyotoo/.rvm/gems/ruby-2.6.1/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `load'
46: from /Users/yoyotoo/Desktop/flatiron/pets/pets_backend/bin/rails:9:in `<top (required)>'
45: from …