このコマンドを入力しようとするたびに理由がわかりません
Users@ubuntu:~/rails_projects/sample_app$ rails generate integration_test static_pages
のような問題があります
/home/Users/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:229:in `default_controller_and_action': missing :controller (ArgumentError)
from /home/Users/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:116:in `normalize_options!'
from /home/Users/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:64:in `initialize'
from /home/Users/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:1438:in `new'
from /home/Users/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:1438:in `add_route'
from /home/Users/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/actionpack-4.0.0/lib/action_dispatch/routing/mapper.rb:1417:in `decomposed_match'
from /home/Users/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/commands.rb:45:in `top (required)'
from bin/rails:4:in `require'
from bin/rails:4:in `main'
また、「bundle exec rspec spec/requests/static_pages_spec.rb」と入力すると、問題も発生します。「require」コマンドでも、「require : command not found」と表示されます
私を少し助けてくれる人はいますか？ありがとう！