我运行 bundle exec rspec spec/的时候terminal给我了下面的error信息, 跪求大神们来分析一下是哪里出了问题

CalebdeMacBook-Pro:sample_app Caleb$ bundle exec rspec spec/

/Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/route_set.rb:434:in add_route': Invalid route name, already in use: 'root' (ArgumentError) You may have defined two routes with the same name using the:asoption, or you may be overriding a route already defined by a resource with the same naming. For the latter, you can restrict the routes created withresources` as explained here: http://guides.rubyonrails.org/routing.html#restricting-the-routes-created

from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1445:in add_route' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1422:indecomposed_match' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1403:in block in match' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1394:ineach' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1394:in match' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:330:inroot' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/mapper.rb:1464:in root' from /Users/Caleb/rubyonrails/sample_app/config/routes.rb:13:inblock in ' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/route_set.rb:341:in instance_exec' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/route_set.rb:341:ineval_block' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/actionpack-4.0.3/lib/action_dispatch/routing/route_set.rb:319:in draw' from /Users/Caleb/rubyonrails/sample_app/config/routes.rb:1:in' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:223:in load' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:223:inblock in load' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:214:in load_dependency' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/dependencies.rb:223:inload' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:40:in block in load_paths' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:40:ineach' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:40:in load_paths' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:16:inreload!' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:26:in block in updater' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/file_update_checker.rb:75:incall' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/activesupport-4.0.3/lib/active_support/file_update_checker.rb:75:in execute' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:27:inupdater' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/routes_reloader.rb:6:in execute_if_updated' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application/finisher.rb:69:inblock in module:Finisher' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/initializable.rb:30:in instance_exec' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/initializable.rb:30:inrun' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/initializable.rb:55:in block in run_initializers' from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:150:inblock in tsort_each' from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:183:in block (2 levels) in each_strongly_connected_component' from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:219:ineach_strongly_connected_component_from' from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:182:in block in each_strongly_connected_component' from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:180:ineach' from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:180:in each_strongly_connected_component' from /Users/Caleb/.rvm/rubies/ruby-2.0.0-p353/lib/ruby/2.0.0/tsort.rb:148:intsort_each' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/initializable.rb:54:in run_initializers' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/application.rb:215:ininitialize!' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/railties-4.0.3/lib/rails/railtie/configurable.rb:30:in method_missing' from /Users/Caleb/rubyonrails/sample_app/config/environment.rb:5:in' from /Users/Caleb/rubyonrails/sample_app/spec/spec_helper.rb:3:in require' from /Users/Caleb/rubyonrails/sample_app/spec/spec_helper.rb:3:in' from /Users/Caleb/rubyonrails/sample_app/spec/models/event_spec.rb:1:in require' from /Users/Caleb/rubyonrails/sample_app/spec/models/event_spec.rb:1:in' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in load' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:inblock in load_spec_files' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in each' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:inload_spec_files' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/command_line.rb:22:in run' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:80:inrun' from /Users/Caleb/.rvm/gems/ruby-2.0.0-p353/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:17:in `block in autorun'