fix: 外部链接预览

frontend/src/components/canvas/components/Editor/Preview.vue

 <template>
   <div id="canvasInfo" :style="customStyle" class="bg">
     <el-row v-if="componentDataShow.length===0" style="height: 100%;" class="custom-position">
-      {{ $t('panel.panel_null') }}
+      <!-- {{ $t('panel.panel_null') }} -->
     </el-row>
     <ComponentWrapper
       v-for="(item, index) in componentDataInfo"

frontend/src/link/link.js

@@ -6,9 +6,11 @@ import '@/styles/index.scss' // global css
 import i18n from '../lang' // internationalization
 import ElementUI from 'element-ui'
 import '@/components/canvas/custom-component' // 注册自定义组件
+import widgets from '@/components/widget'
 import * as echarts from 'echarts'
 Vue.prototype.$echarts = echarts
 Vue.config.productionTip = false
+Vue.use(widgets)
 Vue.use(ElementUI, {
 
   i18n: (key, value) => i18n.t(key, value)