PS X:\Programming\library\ReactJs\hello-friend> npm start

> hello-friend@0.1.0 start X:\Programming\library\ReactJs\hello-friend
> cross-env NODE_ENV=development webpack serve --mode development --progress



  +-----------------------------------+
  |                                   |
      NODE ENVIRONMENT: development
  |                                   |
  +-----------------------------------+


10% buildingi ｢wds｣: Project is running at http://localhost:3000/
i ｢wds｣: webpack output is served from /
i ｢wds｣: Content not from webpack is served from X:\Programming\library\ReactJs\hello-friend\dist
i ｢wds｣: 404s will fallback to /index.html
37% building 4/8 entries 47/61 dependencies 9/23 modulesi ｢wdm｣: wait until bundle finished: /
87% sealing module hashing(node:7832) UnhandledPromiseRejectionWarning: TypeError [ERR_INVALID_ARG_TYPE]: The "data" argument must be of type string or an instance of Buffer, TypedArray, or DataView. Received undefined
    at Hash.update (internal/crypto/hash.js:84:11)
    at BulkUpdateDecorator.update (X:\Programming\library\ReactJs\hello-friend\node_modules\webpack\lib\util\createHash.js:49:14)
    at NormalModule.updateHash (X:\Programming\library\ReactJs\hello-friend\node_modules\webpack\lib\NormalModule.js:1115:8)
    at Compilation.createModuleHashes (X:\Programming\library\ReactJs\hello-friend\node_modules\webpack\lib\Compilation.js:2822:12)
    at X:\Programming\library\ReactJs\hello-friend\node_modules\webpack\lib\Compilation.js:2155:11
    at Hook.eval [as callAsync] (eval at create (X:\Programming\library\ReactJs\hello-friend\node_modules\tapable\lib\HookCodeFactory.js:33:10), <anonymous>:10:1)
    at Hook.CALL_ASYNC_DELEGATE [as _callAsync] (X:\Programming\library\ReactJs\hello-friend\node_modules\tapable\lib\Hook.js:18:14)
    at X:\Programming\library\ReactJs\hello-friend\node_modules\webpack\lib\Compilation.js:2115:36
    at eval (eval at create (X:\Programming\library\ReactJs\hello-friend\node_modules\tapable\lib\HookCodeFactory.js:33:10), <anonymous>:18:1)
    at X:\Programming\library\ReactJs\hello-friend\node_modules\html-webpack-plugin\lib\cached-child-compiler.js:237:53
(Use `node --trace-warnings ...` to show where the warning was created)
(node:7832) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:7832) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.