React项目打包出现的问题

项目打包后页面空白不显示

在配置文件package.json中配置一下"homepage":".",

内容显示出来后但是一刷新就报错，且页面变成空白

把	  import {BrowserRouter as Router} from "react-router-dom"
改成   import {HashRouter as Router,Route,Redirect,Switch} from "react-router-dom"