title: - configuration.output.path: The provided value "public" is not an absolute path! with Webpack
body: <p>I'm using Laravel Mix, that is based on WebPack.</p>
  
  <p>I had it working, and now, it fails with:</p>
  
  <pre><code>Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.
  - configuration.output.path: The provided value "public" is not an absolute path!
  </code></pre>
  
  <p>If I delete my webpack.mix.js content, it still fails the same way.</p>
  
  <p>Can you help me debug this error, I have no clue how to go forward.</p>
  
  <p>I have already deleted the node_modules folder, and ran <code>npm install</code>, it is still failing. </p>
  
  <p>Any idea how should I solve this?</p>