title: npm does not support Node.js
body: <p><strong>npm does not support Node.js v15.5.0 as well as v14.15.3</strong></p>
  <p>npm Version: 5.6.0</p>
  <p>I upgraded it trough the command: <code>npm i -g npm-upgrade</code>
  But I don't get version 6, I always get version 5.6.0</p>
  <p>I also tried different Node.js versions according to <a href="https://askubuntu.com/questions/426750/how-can-i-update-my-nodejs-to-the-latest-version">426750</a>.</p>
  <p>I tried following Node.js versions: v15, v14, v12, v9. It doesn't matter which Node.js version I install, i always get the samme error.</p>
  <p>I also removed Node.js and updated it as recommended in <a href="https://stackoverflow.com/questions/47226238/npm-warn-npm-npm-does-not-support-node-js-v9-1-0">47226238</a>, <a href="https://stackoverflow.com/questions/63196042/npm-does-not-support-node-js-v12-18-3">63196042</a>.</p>
  <p>I have no Idea how I can fix this problem. Do you have any suggestion?</p>