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我跟隨Hartl的Ruby on Rails指南，並且我正在嘗試設置「guard」和「spork」來自動執行「rspec」測試。當我嘗試運行 bundle exec rspec spec/requests/static_pages_spec.rbRails的rspec問題（無法加載這樣的文件--b（LoadError））
我收到以下錯誤：
/home/throne/.rvm/gems/[email protected]/gems/rspec-core-2.11.1/lib/rspec/core/configuration.rb:434:in `require': cannot load such file -- b (LoadError)
from /home/throne/.rvm/gems/[email protected]/gems/rspec-core-2.11.1/lib/rspec/core/configuration.rb:434:in `block in requires='
from /home/throne/.rvm/gems/[email protected]/gems/rspec-core-2.11.1/lib/rspec/core/configuration.rb:434:in `map'
from /home/throne/.rvm/gems/[email protected]/gems/rspec-core-2.11.1/lib/rspec/core/configuration.rb:434:in `requires='
from /home/throne/.rvm/gems/[email protected]/gems/rspec-core-2.11.1/lib/rspec/core/configuration_options.rb:20:in `block in configure'
from /home/throne/.rvm/gems/[email protected]/gems/rspec-core-2.11.1/lib/rspec/core/configuration_options.rb:19:in `each'
from /home/throne/.rvm/gems/[email protected]/gems/rspec-core-2.11.1/lib/rspec/core/configuration_options.rb:19:in `configure'
from /home/throne/.rvm/gems/[email protected]/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:21:in `run'
from /home/throne/.rvm/gems/[email protected]/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:69:in `run'
from /home/throne/.rvm/gems/[email protected]/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:8:in `block in autorun'
我看了看其他的解決方案的人誰也有類似的各種問題（之類的東西重新安裝寶石，使用絕對路徑和固定DO /目標文件中的結尾語句），但他們都沒有改變這個問題。謝謝你的幫助！