ReferenceError: Quill is not defined

[Vue warn]: Error in event handler for "openDialog": "ReferenceError: Quill is not defined".

ReferenceError: Quill is not defined
  at VueComponent.editor (Editor.vue?50ec:90)
  at Vue.eval (Editor.vue?50ec:85)
  at invokeWithErrorHandling (vue.runtime.esm.js?2b0e:1854)
  at Vue.$emit (vue.runtime.esm.js?2b0e:3882)
  at VueComponent.view (List.vue?9185:58)
  at click (eval at ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"25510ec0-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js?!./node_modules/cache-loader/dist/cjs.js?!./node_modules/vue-loader/lib/index.js?!./src/components/News/List.vue?vue&type=template&id=4cea3d0c&scoped=true& (17.js:95), <anonymous>:73:40)
  at invokeWithErrorHandling (vue.runtime.esm.js?2b0e:1854)
  at VueComponent.invoker (vue.runtime.esm.js?2b0e:2179)
  at invokeWithErrorHandling (vue.runtime.esm.js?2b0e:1854)
  at VueComponent.Vue.$emit (vue.runtime.esm.js?2b0e:3882)

resolved

import Quill from 'quill';