运行npm run dev报错

[zkbqhuang]

Syntax Error: Unexpected token (38:4)

36 | export default {
37 | computed: {

38 | ...mapGetters([
| ^
39 | 'getOnlineGuest'
40 | ]),
41 | player() {

@ ./src/components/Index.vue 7:2-102
@ ./src/main.js
@ multi ./build/dev-client ./src/main.js

error in ./src/components/guest.vue

Syntax Error: Unexpected token (19:4)

17 | },
18 | computed: {

19 | ...mapGetters([
| ^
20 | 'getOnlineGuest'
21 | ])
22 | },

@ ./src/components/guest.vue 7:2-102
@ ./src/main.js
@ multi ./build/dev-client ./src/main.js

error in ./src/components/chatroom.vue

Syntax Error: Unexpected token (34:4)

32 | },
33 | methods: {

34 | ...mapActions([
| ^
35 | 'setOnlineGuest'
36 | ]),
37 | sendMsg(){

@ ./src/components/chatroom.vue 7:2-105
@ ./src/main.js
@ multi ./build/dev-client ./src/main.js

Listening at http://localhost:8080

[zkbqhuang]

浏览器打开http://localhost:8080，页面显示如下：
Cannot GET /

从报错中Syntax Error: Unexpected token 看出来是语法错误，是不是依赖的版本不兼容造成的？因为不太熟悉vue前端开发，所以一下也不知道如何解决，希望可以得到大佬指教。