尝试运行 rails 服务器时收到此错误:
$ rails server
/usr/local/Cellar/ruby/1.9.3-p286/lib/ruby/1.9.1/rubygems.rb:317:in `bin_path': can't find gem rails ([">= 0"]) with executable rails (Gem::GemNotFoundException)
from /usr/local/bin/rails:19:in `<main>'
为什么 1.9.3 使用 1.9.1 lib 文件夹?
谢谢。