yarn-error.log

Arguments: 
  /Users/xutaotao/.nvm/versions/node/v11.10.1/bin/node /usr/local/bin/yarn add VueRouter --dev

PATH: 
  /Users/xutaotao/.nvm/versions/node/v11.10.1/bin:/Users/xutaotao/Documents/development/flutter/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Users/xutaotao/.nvm/versions/node/v11.10.1/bin:/Users/xutaotao/Documents/development/flutter/bin:/Users/xutaotao/Library/Android/sdk/tools:/Users/xutaotao/Library/Android/sdk/platform-tools:/Users/xutaotao/Library/Android/sdk/tools:/Users/xutaotao/Library/Android/sdk/platform-tools

Yarn version: 
  1.22.10

Node version: 
  11.10.1

Platform: 
  darwin x64

Trace: 
  Error: https://registry.yarnpkg.com/VueRouter: Not found
      at Request.params.callback [as _callback] (/usr/local/lib/node_modules/yarn/lib/cli.js:66988:18)
      at Request.self.callback (/usr/local/lib/node_modules/yarn/lib/cli.js:140662:22)
      at Request.emit (events.js:197:13)
      at Request.<anonymous> (/usr/local/lib/node_modules/yarn/lib/cli.js:141634:10)
      at Request.emit (events.js:197:13)
      at IncomingMessage.<anonymous> (/usr/local/lib/node_modules/yarn/lib/cli.js:141556:12)
      at Object.onceWrapper (events.js:285:13)
      at IncomingMessage.emit (events.js:202:15)
      at endReadableNT (_stream_readable.js:1129:12)
      at processTicksAndRejections (internal/process/next_tick.js:76:17)

npm manifest: 
  {
    "name": "ninecat-admin-next",
    "version": "0.0.0",
    "scripts": {
      "dev": "vite",
      "build": "vite build",
      "serve": "vite preview"
    },
    "dependencies": {
      "vue": "^3.0.5"
    },
    "devDependencies": {
      "@vitejs/plugin-vue": "^1.1.4",
      "@vue/compiler-sfc": "^3.0.5",
      "vite": "^2.0.0-beta.70"
    }
  }

yarn manifest: 
  No manifest

Lockfile: 
  No lockfile