Phusion error: undefined method `has?' for Sass::Util:Module
问题 I get the following error issued by Phusion when loading a web page: There was an error while trying to load the gem 'compass-rails'. Gem Load Error is: undefined method `has?' for Sass::Util:Module Did you mean? hash Hash Backtrace for gem load error is: /Volumes/Data/htdocs/zetcho/vendor/bundle/gems/compass-0.12.2/lib/compass/sass_extensions/functions/urls.rb:5:in `has?' The code at the indicated location is: module Compass::SassExtensions::Functions::Urls def self.has?(base, instance