VUE build的时候app css CssSyntaxError错误

跑npm run build时，运行node脚本 压缩css时报错，所以这是css的问题去找就可以了。

 

(node:3172) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch blo
ck, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)
(node:3172) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the No
de.js process with a non-zero exit code.

node再6.6.0+，promise 出现错误未进行捕捉时，自动进行的错误捕捉而已！