我正在使用中间人 3.3.9 和
gem 'sass-rails', '~> 4.0.3'
gem 'bootstrap-sass', '~> 3.3.1'
gem 'bootstrap-timepicker-rails'
gem 'sass', '~> 3.2.19'
当我运行捆绑安装时,我收到此错误:
Bundler could not find compatible versions for gem "sass":
In Gemfile:
middleman (~> 3.3.9) ruby depends on
sass (< 4.0, >= 3.4.0) ruby
sass (3.2.19)
我怎样才能使这个通行证?