Laravel 5.4 "npm run dev"

I created on a MAC a clean Laravel application. It runs correctly if I execute "php artisan serve".

I tried to run npm run dev and I get this error:

> cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js

events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: spawn node_modules/webpack/bin/webpack.js ENOENT
    at exports._errnoException (util.js:1018:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
    at onErrorNT (internal/child_process.js:367:16)
    at _combinedTickCallback (internal/process/next_tick.js:80:11)
    at process._tickCallback (internal/process/next_tick.js:104:9)
    at Module.runMain (module.js:606:11)
    at run (bootstrap_node.js:393:7)
    at startup (bootstrap_node.js:150:9)
    at bootstrap_node.js:508:3

As seen on SO, I have tried to remove the node_module and re-execute npm init but it did not help.

Versions:

• npm 2.15.11
• node v6.10.1
• Laravel Framework 5.4.23

Any help appreciated.

via user3429660