报错：react-dom.development.js:59 Uncaught Invariant Violation: Objects are not valid as a React child (found: Mon Sep 23 2019 14:37:24 GMT+0800 (中国标准时间)). If you meant to render a collection of children, use an array instead.
解决方案：react里不能使用对象，而new Date（）是对象
报错：
Failed to compile
./src/Component/Home/Home.js
Line 4: Import in body of module; reorder to top import/first
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This error occurred during the build time and cannot be dismissed.
解决方案：
原文链接：https://www.jianshu.com/p/fd766aa42891
把import '../../App.css';放在const { Header, Footer, Sider, Content } = Layout;之前
