title: With next.js, why did I suddenly start seeing Module not found: Error: Can't resolve 'fs'?
body: <p>I changed nothing, but am using <code>&quot;next&quot;: &quot;9.4.4&quot;</code>, and I see:</p>
  <pre><code>Module not found: Can't resolve 'fs' in 'web/node_modules/graceful-fs'
  Could not find files for /app/d/[id] in .next/build-manifest.json
  ModuleNotFoundError: Module not found: Error: Can't resolve 'fs' in 'web/node_modules/graceful-fs'
  </code></pre>
  <p>What could I be doing wrong?</p>