引入"vuex": "^3.3.0"

package.json

@@ -51,6 +51,7 @@
     "vue-signature-pad": "^1.1.18",
     "vue-template-compiler": "2.6.11",
     "vuedraggable": "^2.23.2",
+    "vuex": "^3.3.0",
     "webstomp-client": "^1.2.6",
     "xlsx": "^0.15.6"
   },