PS Z:\website\innenu-website> vue info Environment Info: System: OS: Windows 10 CPU: (8) x64 Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz Binaries: Node: 12.13.0 - C:\Program Files\nodejs\node.EXE Yarn: 1.19.1 - C:\Program Files (x86)\Yarn\bin\yarn.CMD npm: 6.13.1 - C:\Program Files\nodejs\npm.CMD Browsers: Edge: 44.18362.449.0 npmPackages: @ant-design/icons-vue: 2.0.0 @vue/babel-helper-vue-jsx-merge-props: 1.0.0 @vue/babel-plugin-transform-vue-jsx: 1.1.2 @vue/babel-preset-app: 4.0.5 @vue/babel-preset-jsx: 1.1.2 @vue/babel-sugar-functional-vue: 1.1.2 @vue/babel-sugar-inject-h: 1.1.2 @vue/babel-sugar-v-model: 1.1.2 @vue/babel-sugar-v-on: 1.1.2 @vue/cli-overlay: 4.0.5 @vue/cli-plugin-babel: ^4.0.5 => 4.0.5 @vue/cli-plugin-e2e-cypress: ^4.0.5 => 4.0.5 @vue/cli-plugin-eslint: ^4.0.5 => 4.0.5 @vue/cli-plugin-pwa: ^4.0.5 => 4.0.5 @vue/cli-plugin-router: ^4.0.5 => 4.0.5 @vue/cli-plugin-typescript: ^4.0.5 => 4.0.5 @vue/cli-plugin-unit-mocha: ^4.0.5 => 4.0.5 @vue/cli-plugin-vuex: ^4.0.5 => 4.0.5 @vue/cli-service: ^4.0.5 => 4.0.5 @vue/cli-shared-utils: 4.0.5 @vue/component-compiler-utils: 3.0.2 @vue/eslint-config-prettier: ^6.0.0 => 6.0.0 @vue/eslint-config-typescript: ^5.0.0 => 5.0.0 @vue/preload-webpack-plugin: 1.1.1 @vue/test-utils: 1.0.0-beta.29 => 1.0.0-beta.29 @vue/web-component-wrapper: 1.2.0 ant-design-vue: ^1.4.5 => 1.4.5 babel-helper-vue-jsx-merge-props: 2.0.3 eslint-plugin-vue: ^6.0.1 => 6.0.1 svg-to-vue: 0.6.0 typescript: ^3.7.2 => 3.7.2 vue: ^2.6.10 => 2.6.10 vue-class-component: ^7.1.0 => 7.1.0 vue-eslint-parser: 6.0.5 vue-hot-reload-api: 2.3.4 vue-loader: 15.7.2 vue-property-decorator: ^8.3.0 => 8.3.0 vue-ref: 1.0.6 vue-router: ^3.1.3 => 3.1.3 vue-style-loader: 4.1.2 vue-svg-loader: ^0.15.0 => 0.15.0 vue-template-compiler: ^2.6.10 => 2.6.10 vue-template-es2015-compiler: 1.9.1 vue-wechat-title: ^2.0.5 => 2.0.5 vuex: ^3.1.2 => 3.1.2 npmGlobalPackages: @vue/cli: Not Found 

PS Z:\website\innenu-website> vue add pwa �📦 Installing @vue/cli-plugin-pwa... yarn add v1.19.1 [1/4] Resolving packages... [2/4] Fetching packages... info fsevents@1.2.9: The platform "win32" is incompatible with this module. info "fsevents@1.2.9" is an optional dependency and failed compatibility check. Excluding it from installation. info fsevents@2.1.2: The platform "win32" is incompatible with this module. info "fsevents@2.1.2" is an optional dependency and failed compatibility check. Excluding it from installation. [3/4] Linking dependencies... [4/4] Building fresh packages... success Saved 1 new dependency. info Direct dependencies └─ @vue/cli-plugin-pwa@4.0.5 info All dependencies └─ @vue/cli-plugin-pwa@4.0.5 Done in 17.38s. ✔ Successfully installed plugin: @vue/cli-plugin-pwa �🚀 Invoking generator for @vue/cli-plugin-pwa... ERROR SyntaxError: Unexpected token, expected "," (123:20) SyntaxError: Unexpected token, expected "," (123:20) at Object.raise (C:\Users\zhang\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\@babel\parser\lib\index.js:6420:17) at Object.unexpected (C:\Users\zhang\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\@babel\parser\lib\index.js:7773:16) at Object.expect (C:\Users\zhang\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\@babel\parser\lib\index.js:7759:28) at Object.parseParenAndDistinguishExpression (C:\Users\zhang\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\@babel\parser\lib\index.js:9117:14) at Object.parseExprAtom (C:\Users\zhang\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\@babel\parser\lib\index.js:465:22) at Object.parseExprAtom (C:\Users\zhang\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\@babel\parser\lib\index.js:3618:20) at Object.parseExprSubscripts (C:\Users\zhang\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\@babel\parser\lib\index.js:8556:23) at Object.parseMaybeUnary (C:\Users\zhang\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\@babel\parser\lib\index.js:8536:21) at Object.parseExprOps (C:\Users\zhang\AppData\Roaming\npm\node_modules\@vue\cli\node_modules\@babel\parser\lib\index.js:8402:23)