TypeError: Cannot read property '$cookies' of undefined

[yangyongkangse]

import Vue from "vue";
import VueCookies from 'vue-cookies';
import App from "./App.vue";
import router from "./router";
import store from "./store";
import Axios from "axios";
import Api from "./index";
import ElementUI from "element-ui";
import "element-ui/lib/theme-chalk/index.css";

Vue.config.productionTip = false;
Vue.use(VueCookies)
Vue.use(ElementUI);
Vue.prototype.$http = Api;
new Vue({
VueCookies,
router,
store,
Axios,
ElementUI,
render: h => h(App)
}).$mount("#app");