error in next build

[sleek wyvern]

on the server production, next build doesn't show any success and isntead stops npm run build

lemmings@0.1.0 build
next build

root@host:~/dddd#

on my home acc, the build can be succesfully generated

next build

▲ Next.js 16.0.10 (Turbopack)

• Environments: .env

Creating an optimized production build ...
✓ Compiled successfully in 20.4s
✓ Finished TypeScript in 336.6ms
✓ Collecting page data using 15 workers in 10.7s
✓ Generating static pages using 15 workers (73/73) in 5.7s
✓ Finalizing page optimization in 79.2ms

[mellow brook]

Hi @sleek wyvern. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

---

The knowledge sources don’t contain information about a case where next build exits silently with no error message like in your server log, so I can’t say exactly what’s happening on your machine.

From the Vercel docs, the general guidance is:

• Always inspect the full build logs to find the first real error, not just the final “exited with 1” line. [Troubleshoot build]
• First, try to reproduce the build locally in the same environment (same Node version, same env vars, same next build command). [Troubleshoot build]

Given what we have in the sources, here are the only concrete checks I can suggest:

1. Run next build directly on the server (not via npm run build) and see if any extra output appears.
2. Make sure you’re not hiding errors:
   • Remove any NODE_ENV= override in .env (this has caused odd build issues for others). [Build fails sporadically]
3. If you’re using TypeScript, confirm that type checking isn’t failing:
   • Temporarily set in next.config.js:

     module.exports = {
       typescript: {
         ignoreBuildErrors: true,
       },
     }
     

     and see if the build completes. [typescript config]
4. Compare Node and npm versions between your home machine and the server; mismatches are a common cause of “works locally, fails in prod” in the issues. [Build failing prod]

If after running next build directly you still get no error output at all, the knowledge sources don’t provide more specific debugging steps for that situation. In that case, capturing the full terminal output and environment details and opening a GitHub issue would be the next step.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

@sleek wyvern Kapa.ai is still learning and improving, please let me know how I did by reacting below.

[sleek wyvern]

@mellow brook root@host:~/ddd# next build
Command 'next' not found, but can be installed with:
apt install mailutils-mh # version 1:3.14-1, or
apt install mmh # version 0.4-4
apt install nmh # version 1.7.1-11

[mellow brook]

Let me check the knowledge base for you again. Give me one moment! :books:

---

next is not installed (or not available in PATH) on your server. That’s why running next build directly gives Command 'next' not found.

Next.js is meant to be used as a local dependency in your project and run via npm run/pnpm run, not as a global binary. The docs show installing it into the project and then using scripts like dev, build, etc. [Manual install]

1. Check that Next.js is in your project dependencies

In your project folder on the server (~/bloxtime), run:

cat package.json

You should see something like:

"dependencies": {
  "next": "16.0.10",
  "react": "...",
  "react-dom": "..."
}

If next is missing, install it (plus React) in the project:

npm install next@latest react@latest react-dom@latest
# or with pnpm:
# pnpm i next@latest react@latest react-dom@latest

[Manual install]

2. Use the project script instead of global next

In package.json, you should have:

"scripts": {
  "dev": "next dev",
  "build": "next build",
  "start": "next start"
}

[Manual install]

Then run from the project root:

npm run build
# or
pnpm build

This uses the locally installed next binary from node_modules/.bin, so it works even if next is not installed globally.

3. If npm run build still exits immediately

If npm run build still returns to the prompt with no output, run:

npm run build -- --verbose

and copy the full output. The knowledge sources don’t include a case where next build exits with no logs at all, so if there’s still no output, I can’t say more from the docs; at that point you’d likely need to open a GitHub issue with your package.json, Node version, and full command output.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

@sleek wyvern Kapa.ai is still learning and improving, please let me know how I did by reacting below.

[sleek wyvern]

@mellow brook npm run build

lemmings@0.1.0 build
next build

root@host:

it silently outputs, with no errors

[mellow brook]

Let me check the knowledge base for you again. Give me one moment! :books:

---

The knowledge sources don’t describe a case where npm run build for a Next.js app exits immediately with no output or error at all, so I can’t say with certainty what’s happening on your server.

From the available docs and issues, the only grounded guidance is:

1. Confirm the build is actually failing vs. exiting with code 0

On the server, run:

npm run build; echo "exit code: $?"

If the exit code is 0, Node/Next think the build “succeeded” even though nothing was printed. If it’s non‑zero, it’s a failing build with missing logs.

The Vercel docs emphasize that when builds fail, you normally see an error line like npm run build exited with 1 and more detail above it in the logs. [Troubleshoot build]
In your case, that detail is missing, which is not covered in the docs.

2. Match the environment to the working machine

The docs recommend reproducing the build in the same environment (Node version, dependencies, env vars) as production. [Troubleshoot build]

On both machines, compare:

node -v
npm -v
cat package.json | grep '"next"' -n

If versions differ, align the server to the versions that work at home and reinstall dependencies:

rm -rf node_modules package-lock.json
npm install
npm run build

3. Check for TypeScript build failures (if you use TS)

Next.js will fail next build on TypeScript errors. [Disabling TS errors]

As a diagnostic (not a permanent fix), you can temporarily add to next.config.js / next.config.ts:

/** @type {import('next').NextConfig} */
const nextConfig = {
  typescript: {
    ignoreBuildErrors: true,
  },
}

module.exports = nextConfig

Then run npm run build again. If it now completes, the silent failure was likely due to TS errors that, for some reason, aren’t being printed on that server. [Disabling TS errors]

4. If there is still absolutely no output

The knowledge sources don’t document any further steps for a completely silent next build (no logs, no error), so beyond checking:

• exit code,
• Node/npm/Next versions,
• reinstalling dependencies,
• and temporarily relaxing TS checks,

I don’t have more specific, documented remedies to suggest.

If the problem persists, the Next.js repo maintainers generally ask for a minimal reproduction when behavior is this odd. [Issue triage] In your case that would mean:

• creating a small repo that reproduces the “silent build” on that server, and
• opening a GitHub issue with:
  • your environment info,
  • the exact npm run build output,
  • and the exit code.

---

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

@sleek wyvern Kapa.ai is still learning and improving, please let me know how I did by reacting below.

[sleek wyvern]

@mellow brook exit code: 1

Confirm the build is actually failing vs. exiting with code 0

On the server, run:

npm run build; echo "exit code: $?"

[mellow brook]

Let me check the knowledge base for you again. Give me one moment! :books:

---

Exit code 1 confirms the build is failing, but the knowledge sources don’t describe a case where next build fails with no error output at all, so I can’t say exactly why it’s happening on your server.

From the docs and issues we do have, the only grounded next steps are:

1. Re-run with more logging from npm

Try:

npm run build --loglevel verbose

The Vercel docs stress that when a build fails you need to look for the first real error in the logs; in your case, we’re missing that error entirely. [Troubleshoot build]

2. Align environment with the machine where it works

On both machines:

node -v
npm -v
cat package.json | grep '"next"' -n

Make sure Node, npm, and next versions match the working environment, then on the server:

rm -rf node_modules package-lock.json
npm install
npm run build

The docs recommend reproducing the build in the same environment as production to catch environment-specific issues. [Troubleshoot build]

3. If you use TypeScript, test whether TS is the cause

As a diagnostic, temporarily relax TS errors in next.config.js:

/** @type {import('next').NextConfig} */
const nextConfig = {
  typescript: {
    ignoreBuildErrors: true,
  },
}

module.exports = nextConfig

Then run:

npm run build
echo "exit code: $?"

If it now exits with 0, the failure is likely due to TypeScript errors that aren’t being printed on that server. Next.js does fail builds on TS errors by default. [Disabling TS errors]

4. If it’s still exit code 1 with no error output

The knowledge sources don’t provide further documented steps for a completely silent failing build. In that situation, the maintainers generally ask for a minimal reproduction plus full environment info when you open a GitHub issue. [Issue triage]

If you can share:

• the full npm run build --loglevel verbose output, and
• your Node / npm / Next versions,

I can try to map anything visible there to known issues in the sources.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

@sleek wyvern Kapa.ai is still learning and improving, please let me know how I did by reacting below.

[sleek wyvern]

@mellow brook
npm run build --loglevel verbose
npm verbose cli /usr/bin/node /usr/bin/npm
npm info using npm@10.8.2
npm info using node@v20.19.4
npm verbose title npm run build
npm verbose argv "run" "build" "--loglevel" "verbose"
npm verbose logfile logs-max:10 dir:/root/.npm/_logs/2025-12-15T20_35_40_699Z-
npm verbose logfile /root/.npm/_logs/2025-12-15T20_35_40_699Z-debug-0.log

lemmings@0.1.0 build
next build

npm verbose cwd /root/bloxtime
npm verbose os Linux 5.15.0-164-generic
npm verbose node v20.19.4
npm verbose npm v10.8.2
npm verbose exit 1
npm verbose code 1

[mellow brook]

Let me check the knowledge base for you again. Give me one moment! :books:

---

I’m sorry, but the knowledge sources don’t contain any example where:

• npm run build runs next build,
• exits with code 1,
• and no Next.js output or error is printed at all (even with npm --loglevel verbose).

So I can’t explain this behavior with confidence based on the available docs/issues.

From what is documented:

• When a Next.js build fails, there is normally at least some error output in the logs, and debugging is done by finding that first error line. [Troubleshoot build]
• For unexplained build failures, the maintainers ask for a minimal public reproduction plus full environment info in a GitHub issue. [Issue triage]

Given that:

1. You’ve confirmed:

   • npm run build → runs next build
   • exit code is 1
   • npm --loglevel verbose still shows no Next.js logs.

2. The knowledge sources don’t document any further, more specific steps for a “completely silent” failing next build.

At this point, the only grounded recommendation I can give is:

• Prepare a minimal reproduction repo that shows this behavior on that server (strip unrelated code/deps). [Issue triage]
• Open an issue in the Next.js GitHub repo including:
  • your environment info (OS, Node, npm, Next version),
  • the exact npm run build --loglevel verbose output you shared,
  • and a link to the reproduction.

Without an error message from next build itself, and with no such case in the knowledge sources, I don’t have a documented way to diagnose this further.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

@sleek wyvern Kapa.ai is still learning and improving, please let me know how I did by reacting below.

[sleek wyvern]

@mellow brook npm run build ends with killed

[mellow brook]

Let me check the knowledge base for you again. Give me one moment! :books:

---

I'm sorry, but the knowledge sources do not explicitly mention a scenario where npm run build exits with the word "Killed" while showing no other output. However, they do provide information regarding similar "SIGKILL" and memory-related failures.

Based on the provided documents, a build that is "Killed" or fails with a SIGKILL usually indicates that the process has exceeded available system resources, most commonly memory.

Potential Causes and Solutions

• Out of Memory (OOM): Vercel and general build environments can throw a SIGKILL or OOM error when the project overruns its allocated memory. This is often caused by a large number of dependencies, handling massive datasets, or inefficient code. [Troubleshooting OOM]
• Increase Node.js Memory: The default memory limit for Node.js can be too conservative for large builds. You can try increasing the available heap size by setting the NODE_OPTIONS environment variable before your build command:

  NODE_OPTIONS="--max-old-space-size=6144" npm run build
  

  [Reducing memory overhead]
• TypeScript/Linting Memory usage: In some cases, the "Linting and checking validity of types" stage consumes excessive memory. Users have reported that using TypeScript 5.8 or higher can sometimes lead to heap out-of-memory issues. [NextJS build out of memory]
• System Limits: On Linux systems, restrictive system limits (viewable via ulimit -a) can sometimes cause build processes to fail or spawn errors if Next.js does not respect them properly. [Build error pages directory]

Recommended Steps

1. Check System Logs: Since the output is silent, check your system's kernel logs (e.g., dmesg or /var/log/syslog on Linux) to confirm if the "OOM Killer" terminated the process.
2. Verify Memory Usage: Monitor the server's memory usage while running the build to see if it hits the hardware limit.
3. Bypass Type Checking: As a diagnostic, try disabling type checking during the build in your next.config.js to see if the process completes:

   const nextConfig = {
     typescript: {
       ignoreBuildErrors: true,
     },
   }
   

   [NextJS build out of memory]

---

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: