title: Why trying to run Vue.js it does not work properly?
body: <p>i can't start my Vue.js application</p>
  
  <p>the error is:</p>
  
  <pre><code>
     C:\xampp\htdocs\crm-front&gt;npm run dev
  
  &gt; crm-front@1.0.0 dev C:\xampp\htdocs\crm-front
  &gt; cross-env NODE_ENV=development webpack-dev-server --open --hot
  
  internal/modules/cjs/loader.js:800
     throw err;
     ^
  
  Error: Cannot find module 'webpack/bin/config-yargs'
  Require stack:
  - C:\xampp\htdocs\crm-front\node_modules\webpack-dev-server\bin\webpack-dev-server.js
  ?[90m    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:797:15)?[39m
  ?[90m    at Function.Module._load (internal/modules/cjs/loader.js:690:27)?[39m
  ?[90m    at Module.require (internal/modules/cjs/loader.js:852:19)?[39m
  ?[90m    at require (internal/modules/cjs/helpers.js:74:18)?[39m
     at Object.&lt;anonymous&gt; (C:\xampp\htdocs\crm-front\node_modules\?[4mwebpack-dev-server?[24m\bin\webpack-dev-server.js:56:1)
  ?[90m    at Module._compile (internal/modules/cjs/loader.js:959:30)?[39m
  ?[90m    at Object.Module._extensions..js (internal/modules/cjs/loader.js:995:10)?[39m
  ?[90m    at Module.load (internal/modules/cjs/loader.js:815:32)?[39m
  ?[90m    at Function.Module._load (internal/modules/cjs/loader.js:727:14)?[39m
  ?[90m    at Function.Module.runMain (internal/modules/cjs/loader.js:1047:10)?[39m {
   code: ?[32m'MODULE_NOT_FOUND'?[39m,
   requireStack: [
     ?[32m'C:\\xampp\\htdocs\\crm-front\\node_modules\\webpack-dev-server\\bin\\webpack-dev-server.js'?[39m
   ]
  }
  npm ERR! code ELIFECYCLE
  npm ERR! errno 1
  npm ERR! crm-front@1.0.0 dev: `cross-env NODE_ENV=development webpack-dev-server --open --hot`
  npm ERR! Exit status 1
  npm ERR!
  npm ERR! Failed at the crm-front@1.0.0 dev script.
  npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
  
  npm ERR! A complete log of this run can be found in:
  npm ERR!     C:\Users\Amedeo\AppData\Roaming\npm-cache\_logs\2019-11-23T12_26_07_551Z-debug.log
  </code></pre>
  
  <p>I tried to downgrade to version 2.9.1 as recommended on other forums but it doesn't work anyway</p>
  
  <p>Can you help me?</p>
  
  <p>Thank you</p>