Node Sass does not yet support your current environment: Windows 64-bit with Unsupported runtime解决方法

在运行一个 vue-element-admin 的项目时，报错如下

Node Sass does not yet support your current environment: Windows 64-bit with Unsupported runtime

node sass 不支持当前的环境，解决方法如下：

1、卸载当前版本node sass

cnpm uninstall --save node-sass

2、重新安装node sass

cnpm install --save node-sass