title: Error: Cannot find module 'compression'
body: <p>When I want to start my application it returns the following error: </p>
  
  <pre><code>Error: Cannot find module 'compression'
      at Function.Module._resolveFilename (module.js:547:15)
      at Function.Module._load (module.js:474:25)
      at Module.require (module.js:596:17)
      at require (internal/module.js:11:18)
      at Object.&lt;anonymous&gt; (.....\node_modules\webpack-dev- 
      server\lib\Server.js:11:18)
      at Module._compile (module.js:652:30)
      at Object.Module._extensions..js (module.js:663:10)
      at Module.load (module.js:565:32)
      at tryModuleLoad (module.js:505:12)
      at Function.Module._load (module.js:497:3)
  </code></pre>
  
  <p>I have tried:</p>
  
  <ul>
  <li><code>yarn install</code></li>
  <li><code>yarn upgrade</code></li>
  <li>deleting <code>node_modules</code></li>
  <li>etc... </li>
  </ul>
  
  <p>But it's still not working. Can you help me please? </p>