添加echarts到package.json

package.json

@@ -10,6 +10,7 @@
   "dependencies": {
     "ant-design-vue": "^1.6.5",
     "core-js": "^3.6.5",
+    "echarts": "^4.9.0",
     "vue": "^2.6.11",
     "vue-router": "^3.2.0",
     "vuex": "^3.4.0"