您已经尝试在已加载Spring时调用它（即定义了Spring常量）。
这可能是因为您使用Spring 1.0生成了binstub，而现在系统上的Spring版本> 1.0。要解决此问题，请将捆绑软件升级到最新的Spring版本，然后运行bundle exec spring binstub --all来重新生成binstub。从1.0升级到1.1是必须执行的一次性步骤。
这是回溯：
/Users/woodbineone/.gem/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:55:in `load'
/Users/woodbineone/.gem/ruby/2.7.0/gems/bootsnap-1.4.6/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:55:in `load'
/Users/woodbineone/.gem/ruby/2.7.0/gems/activesupport-6.0.2.2/lib/active_support/dependencies.rb:319:in `block in load'
/Users/woodbineone/.gem/ruby/2.7.0/gems/activesupport-6.0.2.2/lib/active_support/dependencies.rb:291:in `load_dependency'
/Users/woodbineone/.gem/ruby/2.7.0/gems/activesupport-6.0.2.2/lib/active_support/dependencies.rb:319:in `load'
/Users/woodbineone/.gem/ruby/2.7.0/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `<main>'
/Users/woodbineone/.rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in `require'
/Users/woodbineone/.rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:92:in `require'
/Users/woodbineone/workspace/blog/bin/spring:15:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'