Locally okay website is 404 in vercel

Hey I used cursor to build a website app, it works perfectly locally (I start frontend, backend, db separately), but when I deploy to Vercel it has many problems and the most significant is website 404

1404: NOT_FOUND2Code: NOT_FOUND3ID: sfo1::p2r5r-1755826011067-ad735a6265a74

I've asked multiple AI models about this and made tons of changes but still no luck so far. The latest output screenshot:

and source screenshot:

Any ideas on what should be next? I think i tried to convert backend to serverless func but frontend→backend call also didn’t work..

There's another community post with 404 debugging tips that might be helpful. Please give these solutions a try and let us know how it goes.

https://community.vercel.com/t/debugging-404-errors/437

A human should be around soon to offer more advice. But you can also get helpful information quickly by asking v0.

Update: I’m now seeing frontend not found:

My vercel.json is

1{2  "version": 2,3  "builds": [4    {5      "src": "frontend/package.json",6      "use": "@vercel/static-build",7      "config": {8        "distDir": "dist",9        "outputDirectory": "."10      }11    },12    {13      "src": "index.js",14      "use": "@vercel/node"15    }16  ],17  "rewrites": [{ "source": "/(.*)", "destination": "/index.html" }],18  "env": {19    "NODE_ENV": "production"20  }21}

And my directory is

So far I also tried to route to index.html successfully but it still fails to route to my landing page which is frontend/src/pages/landing.jsx..I’m frustrated now

Vercel Staff

Are you using the monorepo setup recommended in the docs, or a different deployment structure?

https://vercel.com/docs/monorepos

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