相关疑难解决方法(0)

我在安装ruby后尝试安装sass,但是我得到以下错误,请帮我解决这个问题

    maradhak@WW730VW7X1688 /c/softwares
    $ gem -v
    2.2.2

    maradhak@WW730VW7X1688 /c/softwares
    $ gem install sass
    ERROR:  Could not find a valid gem 'sass' (>= 0), here is why:
              Unable to download data from https://rubygems.org/ - SSL_connect retur
    ned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed (
    https://rubygems.org/latest_specs.4.8.gz)