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No dev server is running on port 8080 and no static files were found in /workspace.
How to fix
Dev server log /tmp/dev-server.log
! Corepack is about to download https://registry.npmjs.org/npm/-/npm-12.2.1.tgz
npm notice run npx
npm notice run 'next' start -p 8080 -H 0.0.0.0
  ▲ Next.js 14.2.33
  - Local:        http://localhost:8080
  - Network:      http://0.0.0.0:8080

 ✓ Starting...
 ⚠ "next start" does not work with "output: standalone" configuration. Use "node .next/standalone/server.js" instead.
 ✓ Ready in 880ms
TypeError: Cannot read properties of null (reading 'digest')
    at /workspace/node_modules/next/dist/compiled/next-server/app-page.runtime.prod.js:13:19722
    at AsyncLocalStorage.run (node:internal/async_local_storage/async_hooks:91:14)
    at e_ (/workspace/node_modules/next/dist/compiled/next-server/app-page.runtime.prod.js:12:141421)
    at /workspace/node_modules/next/dist/compiled/next-server/app-page.runtime.prod.js:12:138763
    at process.processTicksAndRejections (node:internal/process/task_queues:103:5)
Error: Failed to find Server Action "x". This request might be from an older or newer deployment. Original error: Cannot read properties of undefined (reading 'workers')
    at rT (/workspace/node_modules/next/dist/compiled/next-server/app-page.runtime.prod.js:16:1766)
    at /workspace/node_modules/next/dist/compiled/next-server/app-page.runtime.prod.js:15:8946
    at AsyncLocalStorage.run (node:internal/async_local_storage/async_hooks:91:14)
    at rE (/workspace/node_modules/next/dist/compiled/next-server/app-page.runtime.prod.js:15:8154)
    at r7 (/workspace/node_modules/next/dist/compiled/next-server/app-page.runtime.prod.js:18:1150)
    at /workspace/node_modules/next/dist/compiled/next-server/app-page.runtime.prod.js:19:726
    at AsyncLocalStorage.run (node:internal/async_local_storage/async_hooks:91:14)
    at Object.wrap (/workspace/node_modules/next/dist/compiled/next-server/app-page.runtime.prod.js:13:17831)
    at /workspace/node_modules/next/dist/compiled/next-server/app-page.runtime.prod.js:19:616
    at AsyncLocalStorage.run (node:internal/async_local_storage/async_hooks:91:14)