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[Error] bin/rails:6: warning: already initialized constant APP_PATH [rails]

エラー rails new でAPPを作成後、rails s で躓いた. $ rails s bin/rails:6: warning: already initialized constant APP_PATH /home/dev1/railbook/bin/rails:6: warning: previous definition of APP_PATH was here 環境 $ ruby -v ruby 2.2.0p0 (2014-12…