I could bundle my vue project when I run 'npm run buildstage",

I could bundle my vue project when I run 'npm run buildstage" (Vue cli)

Package.json

 "scripts": {
    "serve": "vue-cli-service serve --mode development",
    "buildstage": "vue-cli-service build --mode stage",
    "build": "vue-cli-service build --mode production",
    "lint": "vue-cli-service lint"
  },