代碼如下：importReact,{Component}from'react';importReactDOMfrom'react-dom';import'./index.css';importregisterServiceWorkerfrom'./registerServiceWorker';import'./App.css';importHeaderfrom'./header';importMainfrom'./main';importFooterfrom'./footer';importLoginfrom'./login/index'import{HashRouterasRouter,Route,hashHistory,Switch}from'react-router';import{Provider}from'react-redux'importstorefrom'./store'constHome=()=>(Home)constChat=()=>()constLoginPage=()=>()classAppextendsComponent{render(){**this.props.history.push('/chat')**console.log(hashHistory)return()}}想通過render中執(zhí)行切換路由this.props.history.push('/chat')報錯：TypeError:Cannotreadproperty'push'ofundefined，不知道怎么辦了，求解答