✖ Index html generation failed.
undefined:1:13408: property missing ':'

修改angualr.json  

build.configurations 里面

"optimization": {       "styles": { 　　      "minify": true,               "inlineCritical": false        }  },   多谢大神指导，原文地址:https://www.cnblogs.com/yiweiyihang/p/15251644.html