Fix Vercel preview error

Author: lulunac27a

package.json

@@ -14,7 +14,8 @@
     "vue": "^3.4.15",
     "vue-ellipse-progress": "^2.1.2",
     "vuex": "^4.1.0",
-    "vuex-persistedstate": "^4.1.0"
+    "vuex-persistedstate": "^4.1.0",
+    "@vue/cli-service": "^5.0.8"
   },
   "devDependencies": {
     "@typescript-eslint/eslint-plugin": "^8.8.0",