我正试图修改在另一台计算机上构建的rails应用程序，我运行了bundle install所有的宝石都安装好了。但当我运行rake-db:migrate时，它会抛出一堆错误，我是rail的新手，无法理解的错误消息是什么
rake aborted!
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/ruby-debug-base19-0.11.25/lib/ruby_debug.so: undefined symbol: ruby_current_thread - /home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/ruby-debug-base19-0.11.25/lib/ruby_debug.so
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/ruby-debug-base19-0.11.25/lib/ruby-debug-base.rb:1:in `require'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/ruby-debug-base19-0.11.25/lib/ruby-debug-base.rb:1:in `<top (required)>'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/ruby-debug19-0.11.6/cli/ruby-debug.rb:5:in `require'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/ruby-debug19-0.11.6/cli/ruby-debug.rb:5:in `<top (required)>'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `require'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `each'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `block in require'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `each'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `require'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@global/gems/bundler-1.2.3/lib/bundler.rb:128:in `require'
/home/diadara/hw3_rottenpotatoes/config/application.rb:13:in `<top (required)>'
/home/diadara/hw3_rottenpotatoes/Rakefile:5:in `require'
/home/diadara/hw3_rottenpotatoes/Rakefile:5:in `<top (required)>'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/rake-0.9.2.2/lib/rake/rake_module.rb:25:in `load'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/rake-0.9.2.2/lib/rake/rake_module.rb:25:in `load_rakefile'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/rake-0.9.2.2/lib/rake/application.rb:501:in `raw_load_rakefile'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/rake-0.9.2.2/lib/rake/application.rb:82:in `block in load_rakefile'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/rake-0.9.2.2/lib/rake/application.rb:81:in `load_rakefile'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/rake-0.9.2.2/lib/rake/application.rb:65:in `block in run'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/bin/rake:19:in `<main>'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/bin/ruby_noexec_wrapper:14:in `eval'
/home/diadara/.rvm/gems/ruby-1.9.3-p374@saasrails3.1/bin/ruby_noexec_wrapper:14:in `<main>'
看起来您没有在项目中正确安装ruby调试。如果不需要，请将其从gemfile中删除，或者看看这个答案来修复它：不能将ruby-debug19与1.9.3-p0一起使用？