can't load package: package internal: no buildable Go source files in

参照http://studygolang.com/articles/7017 安装了开发环境 但是调试运行的时候报错 can't load package: package internal: no buildable Go source files in E:\ProgramFiles\Go\src\internal exit status 1 有遇到这个问题并解决了的同学吗？麻烦留下脚印，谢谢