No valid
builds array Missing entry file Empty repo or ignored files Wrong file extension No build output A classic Vercel silent fail — no output, no logs, just a ghost deploy. But we’re not letting this rotator die in the dark 💡🔍
If your deploy says “No output was created,” it usually means the build step didn’t generate any compiled files. And Vercel won’t tell you why unless you dig.
🧠 What “No Output Was Created” Usually Means
| Cause | Description | Fix |
|---|---|---|
❌ No valid builds array | Vercel doesn’t know what to compile | Add a "builds" array with correct src and use |
| ❌ Missing entry file | No index.js, api/*.js, or frontend assets | Ensure at least one valid file is present |
| ❌ Wrong file extension | vercel.js instead of vercel.json | Rename to vercel.json and validate JSON |
| ❌ Empty repo or ignored files | .gitignore excludes everything | Confirm files are tracked and pushed |
| ❌ No output from build step | No logs, no compiled assets | Add logging to API files or test locally |
✅ What You Should Do Right Now
- Open Vercel Dashboard → Failed Deployment → View Logs
- Scroll to the top and look for:
vercel.json is invalidNo build output foundBuild step exited with code 1
- Run local build test:
vercel build - Paste your
vercel.jsonhere and verify against actual file structure
If it fails locally, the real error spills out. And sometimes, the silent deploy becomes very loud.