title: Unable to install optimize-css-assets-webpack-plugin
body: <p>My error when trying to install  <code>npm install --save-dev optimize-css-assets-webpack-plugin</code></p>
  <pre><code>npm ERR! code ERESOLVE
  npm ERR! ERESOLVE unable to resolve dependency tree
  npm ERR!
  npm ERR! While resolving: webpack@1.0.0
  npm ERR! Found: webpack@5.33.2
  npm ERR! node_modules/webpack
  npm ERR!   dev webpack@&quot;^5.33.2&quot; from the root project
  npm ERR!
  npm ERR! Could not resolve dependency:
  npm ERR! peer webpack@&quot;^4.0.0&quot; from optimize-css-assets-webpack-plugin@5.0.4
  npm ERR! node_modules/optimize-css-assets-webpack-plugin
  npm ERR!   dev optimize-css-assets-webpack-plugin@&quot;*&quot; from the root project
  npm ERR!
  npm ERR! Fix the upstream dependency conflict, or retry
  npm ERR! this command with --force, or --legacy-peer-deps
  npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
  npm ERR! 
  npm ERR! See C:\Users\danie\AppData\Local\npm-cache\eresolve-report.txt for a full report.
  
  npm ERR! A complete log of this run can be found in:
  npm ERR!     C:\Users\danie\AppData\Local\npm-cache\_logs\2021-04-16T17_32_37_320Z-debug.log
  </code></pre>
  <p>I have already updated webpack and npm. I checked the <a href="https://www.npmjs.com/package/optimize-css-assets-webpack-plugin" rel="nofollow noreferrer">installation page</a> and it mentions that I should have the most recent webpack. Any ideas?</p>