Error launching Rails server: undefined method 'configure'
问题 I\'m new to rails and working through Hartl\'s tutorial. Everything was fine until I tried to do the tutorial a second time and created another project trying to use the latest version of rails. When I try to load the rails server from the app folder I get the following error. $ rails s => Booting WEBrick => Rails 4.0.4 application starting in development on => Run `rails server -h` for more startup options => Ctrl-C to shutdown server Exiting /Users/sierra/Desktop/sample_app_2/config