打开页面报这个错，页面一片空白

Uncaught ReferenceError: DEV is not defined at Function.RootClass.extend (clazz.js?00f5:66) at eval (Component.js?bbb1:23) at Object. (app.js:895) at webpack_require (app.js:689) at fn (app.js:110) at eval (Global.js?6f94:1) at Object. (app.js:4998) at webpack_require (app.js:689) at fn (app.js:110) at Object.eval (echarts.js?4ad2:1)

ERROR in ./src/main.js Module not found: Error: Cannot resolve 'file' or 'directory' ./components/nav3/Page6.vue in xxxxxxx/vueAdmin/src @ ./src/main.js 67:13-51 请问这个是什么问题？

Module parse failed: C:\Users\user\WebstormProjects\vue-admin\node_modules\element-ui\packages\scrollbar\src\main.js Unexpected token (65:6) You may need an appropriate loader to handle this file type. You may need an appropriate loader to handle this file type. | }, this.$slots.default); | const wrap = ( | <div | ref="wrap" | style={ style } 请问这个是什么原因呢？谢谢

1.初次用谷歌浏览器登录时加载有点慢；2.请问一下这些数据都是自己模拟的吗？3.右上角的用户那一块多次点击感觉有问题；4.如果需要用vue做cms后台管理还需要处理一些什么，目前对路由这一块不是特别熟悉？5.进入到列表页时，向后台请求数据怎么做好分页处理（返回所有数据）；6.clone下来可以直接在本地运行吗？ O(∩_∩)O谢谢

(node:9250) UnhandledPromiseRejectionWarning: Error: Exited with code 3 at ChildProcess. (/home/demoadmin/vue-admin-master/node_modules/opn/index.js:83:13) at Object.onceWrapper (events.js:285:13) at ChildProcess.emit (events.js:197:13) at maybeClose (internal/child_process.js:984:16) at Socket.stream.socket.on (internal/child_process.js:401:11) at Socket.emit (events.js:197:13) at Pipe._handle.close (net.js:611:12) (node:9250) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1) (node:9250) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

/Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/axios/lib/adapters/xhr.js:178 POST http://localhost:9080/login 404 (Not Found) dispatchXhrRequest @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/axios/lib/adapters/xhr.js:178 xhrAdapter @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/axios/lib/adapters/xhr.js:12 dispatchRequest @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/axios/lib/core/dispatchRequest.js:59 Promise resolved (async) request @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/axios/lib/core/Axios.js:51 Axios.(anonymous function) @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/axios/lib/core/Axios.js:71 wrap @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/axios/lib/helpers/bind.js:9 requestLogin @ api.js?e3b8:6 (anonymous) @ Login.vue?7463:56 (anonymous) @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/element-ui/lib/element-ui.common.js:22459 (anonymous) @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/element-ui/lib/element-ui.common.js:22977 complete @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/index.js:107 (anonymous) @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/index.js:243 next @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/util.js:170 next @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/util.js:138 cb @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/index.js:191 required @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/validator/required.js:21 (anonymous) @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/index.js:234 next @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/util.js:136 asyncSerialArray @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/util.js:142 (anonymous) @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/util.js:176 asyncMap @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/util.js:173 validate @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/async-validator/lib/index.js:159 validate @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/element-ui/lib/element-ui.common.js:22973 (anonymous) @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/element-ui/lib/element-ui.common.js:22453 validate @ /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/element-ui/lib/element-ui.common.js:22452 handleSubmit2 @ Login.vue?7463:49 click @ Login.vue?d1fb:92 invokeWithErrorHandling @ vue.esm.js?a026:1863 invoker @ vue.esm.js?a026:2188 original._wrapper @ vue.esm.js?a026:7559 /Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/axios/lib/core/createError.js:16 Uncaught (in promise) Error: Request failed with status code 404 at createError (/Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/axios/lib/core/createError.js:16) at settle (/Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/axios/lib/core/settle.js:18) at XMLHttpRequest.handleLoad (/Users/ding/Downloads/Job/jjsoft-v1.0.0/jjsoft-mac/node_modules/axios/lib/adapters/xhr.js:77)