图片0
添加国内ruby源 gem sources --add https://gems.ruby-china.org
报错：
Error fetching https://gems.ruby-china.org/:
bad response Not Found 404 (https://gems.ruby-china.org/specs.4.8.gz)
原因是 ruby-china 更换了域名
https://gems.ruby-china.com
命令替换为 gem sources --add https://gems.ruby-china.com 解决
