root@Victory:~/桌面/blog# rails server
=> Booting Thin
=> Rails 5.0.0.1 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
Exiting
/var/lib/gems/2.3.0/gems/actionpack-5.0.0.1/lib/action_dispatch/middleware/session/abstract_store.rb:90:in `<module:Session>': uninitialized constant Rack::Session::Abstract::Persisted (NameError)
from /var/lib/gems/2.3.0/gems/actionpack-5.0.0.1/lib/action_dispatch/middleware/session/abstract_store.rb:8:in `<module:ActionDispatch>'
from /var/lib/gems/2.3.0/gems/actionpack-5.0.0.1/lib/action_dispatch/middleware/session/abstract_store.rb:7:in `<top (required)>'
from /var/lib/gems/2.3.0/gems/actionpack-5.0.0.1/lib/action_dispatch/middleware/session/cookie_store.rb:2:in `<top (required)>'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/application/configuration.rb:181:in `const_get'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/application/configuration.rb:181:in `session_store'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/application/default_middleware_stack.rb:58:in `block in build_stack'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/application/default_middleware_stack.rb:13:in `tap'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/application/default_middleware_stack.rb:13:in `build_stack'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/application.rb:504:in `default_middleware_stack'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/engine.rb:506:in `block in app'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/engine.rb:504:in `synchronize'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/engine.rb:504:in `app'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/application/finisher.rb:37:in `block in <module:Finisher>'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/initializable.rb:30:in `instance_exec'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/initializable.rb:30:in `run'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/initializable.rb:55:in `block in run_initializers'
from /usr/lib/ruby/2.3.0/tsort.rb:228:in `block in tsort_each'
from /usr/lib/ruby/2.3.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
from /usr/lib/ruby/2.3.0/tsort.rb:431:in `each_strongly_connected_component_from'
from /usr/lib/ruby/2.3.0/tsort.rb:349:in `block in each_strongly_connected_component'
from /usr/lib/ruby/2.3.0/tsort.rb:347:in `each'
from /usr/lib/ruby/2.3.0/tsort.rb:347:in `call'
from /usr/lib/ruby/2.3.0/tsort.rb:347:in `each_strongly_connected_component'
from /usr/lib/ruby/2.3.0/tsort.rb:226:in `tsort_each'
from /usr/lib/ruby/2.3.0/tsort.rb:205:in `tsort_each'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/initializable.rb:54:in `run_initializers'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/application.rb:352:in `initialize!'
from /root/桌面/blog/config/environment.rb:5:in `<top (required)>'
from /root/桌面/blog/config.ru:3:in `require_relative'
from /root/桌面/blog/config.ru:3:in `block in <main>'
from /usr/lib/ruby/vendor_ruby/rack/builder.rb:55:in `instance_eval'
from /usr/lib/ruby/vendor_ruby/rack/builder.rb:55:in `initialize'
from /root/桌面/blog/config.ru:in `new'
from /root/桌面/blog/config.ru:in `<main>'
from /usr/lib/ruby/vendor_ruby/rack/builder.rb:49:in `eval'
from /usr/lib/ruby/vendor_ruby/rack/builder.rb:49:in `new_from_string'
from /usr/lib/ruby/vendor_ruby/rack/builder.rb:40:in `parse_file'
from /var/lib/gems/2.3.0/gems/rack-2.0.1/lib/rack/server.rb:318:in `build_app_and_options_from_config'
from /var/lib/gems/2.3.0/gems/rack-2.0.1/lib/rack/server.rb:218:in `app'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/server.rb:59:in `app'
from /var/lib/gems/2.3.0/gems/rack-2.0.1/lib/rack/server.rb:353:in `wrapped_app'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/server.rb:124:in `log_to_stdout'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/server.rb:77:in `start'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:90:in `block in server'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:85:in `tap'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:85:in `server'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
from /var/lib/gems/2.3.0/gems/railties-5.0.0.1/lib/rails/commands.rb:18:in `<top (required)>'
from /root/桌面/blog/bin/rails:9:in `require'
from /root/桌面/blog/bin/rails:9:in `<top (required)>'
from /var/lib/gems/2.3.0/gems/spring-1.7.2/lib/spring/client/rails.rb:28:in `load'
from /var/lib/gems/2.3.0/gems/spring-1.7.2/lib/spring/client/rails.rb:28:in `call'
from /var/lib/gems/2.3.0/gems/spring-1.7.2/lib/spring/client/command.rb:7:in `call'
from /var/lib/gems/2.3.0/gems/spring-1.7.2/lib/spring/client.rb:30:in `run'
from /var/lib/gems/2.3.0/gems/spring-1.7.2/bin/spring:49:in `<top (required)>'
from /var/lib/gems/2.3.0/gems/spring-1.7.2/lib/spring/binstub.rb:11:in `load'
from /var/lib/gems/2.3.0/gems/spring-1.7.2/lib/spring/binstub.rb:11:in `<top (required)>'
from /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /root/桌面/blog/bin/spring:13:in `<top (required)>'
from bin/rails:3:in `load'
from bin/rails:3:in `<main>'
root@Victory:~/桌面/blog#