rake db：create：すべてのエラー：nilを文字列に変換できません。

Question

can't convert nil to Stringエラーが発生しました。私のpostgresqlデータベースrake db:create:allを試してみました。私はrake db:create:allを実行すると

私は「あなたは既にレーキ0.9.2.2を起動しましたが、あなたのGemfileは熊手0.9.2が必要です。バンドルexecを使用してこの問題を解決することがあります。」

を取得します

私はbundle exec rake db:create:all --traceを実行すると私は私がクローン化されたgitのこと、既存のアプリケーションのためのライアンベイツチュートリアルを以下のよ

/Users/verdi/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:211: warning: Insecure world writable dir /usr/local in PATH, mode 040777 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:211: warning: Insecure world writable dir /usr/local in PATH, mode 040777 
(in /Users/verdi/Documents/Rails/Terminal) 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/net-ping-1.5.0/lib/net/ping/external.rb:4: Use RbConfig instead of obsolete and deprecated Config. 
rake aborted! 
can't convert nil into String 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/cucumber-rails-0.5.2/lib/cucumber/rails3.rb:3:in `dirname' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/cucumber-rails-0.5.2/lib/cucumber/rails3.rb:3:in `<top (required)>' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `require' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `block in require' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in `block in load_dependency' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:596:in `new_constants_in' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:225:in `load_dependency' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.0.9/lib/active_support/dependencies.rb:239:in `require' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/cucumber-rails-0.5.2/lib/cucumber/rails.rb:2:in `<top (required)>' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:74:in `require' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:74:in `rescue in block in require' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:62:in `block in require' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `each' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `require' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194@global/gems/bundler-1.1.3/lib/bundler.rb:119:in `require' 
/Users/verdi/Documents/Rails/Terminal/config/application.rb:7:in `<top (required)>' 
/Users/verdi/Documents/Rails/Terminal/Rakefile:4:in `require' 
/Users/verdi/Documents/Rails/Terminal/Rakefile:4:in `<top (required)>' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2/lib/rake/rake_module.rb:25:in `load' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2/lib/rake/rake_module.rb:25:in `load_rakefile' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2/lib/rake/application.rb:495:in `raw_load_rakefile' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2/lib/rake/application.rb:78:in `block in load_rakefile' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2/lib/rake/application.rb:77:in `load_rakefile' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2/lib/rake/application.rb:61:in `block in run' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2/lib/rake/application.rb:59:in `run' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/gems/rake-0.9.2/bin/rake:32:in `<top (required)>' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/bin/rake:23:in `load' 
/Users/verdi/.rvm/gems/ruby-1.9.3-p194/bin/rake:23:in `<main>' 

を得る： http://railscasts.com/episodes/342-migrating-to-postgresql?view=asciicast

Answer 1

をダブルを確認するためにあなたのdatabase.yamlファイルをチェックすべての値がそこにあります