Vercel: Command "npm run build" exited with 1 Next.js Origin: On your device OSI layer 7 · Application Last updated 5 Nov 2026

Vercel: Error: Command "npm run build" exited with 1

The Vercel build step failed; the real reason is printed in the build log above this line.

Exact message you may see Error: Command "npm run build" exited with 1Command "npm run build" exited with 1Error: Command "yarn build" exited with 1Error: Command "pnpm run build" exited with 1Build Failed Command "next build" exited with 1
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Seen on: Next.js Node.js

Meaning

Scroll up to the first error: type errors, lint errors, missing env vars at build, module not found (case-sensitivity), Node version differences, or memory limits. Reproduce locally with vercel build or npm run build using the same Node version (set in Project Settings or engines).

Common causes

  • Type/lint errors only enforced in CI
  • Missing environment variables
  • Case-sensitive import paths (macOS vs Linux)
  • Node version mismatch
  • Out-of-memory in the build

⚡ Quick fix

  1. Read the build log above the error
  2. Run vercel pull && vercel build locally
  3. Match Node version via engines.node or Project Settings

Detailed fix by platform

Linux

  1. npx vercel pull --yes && npx vercel build

How to diagnose

  1. Log — First error line?
  2. Env — Present at build?
  3. Node — Same version?

🔧 Still not fixed?

Many errors look alike. If the steps above didn’t solve it, one of these is probably what you’re facing:

Where this error sits

Origin: On your device. Errors that are often confused with or caused by this one (click to open):

[Vue warn]: Component is missing template or render function — Vue: [Vue warn]: Component is missing template or render function. (Vue)[Vue warn]: Component…Component provided template option but runtime compilation is not supported — Vue: [Vue warn]: Component provided template option but runtime compilation is not supported in this build of Vue. Configure your bundler to alias "vue" to "vue/dist/vue.esm-bundler.js" (Vue)Component provided te…Could not find a production build in the '.next' directory — Next.js: Error: Could not find a production build in the '.next' directory. Try building your app with 'next build' before starting the production server (Next.js)Could not find a prod…Edge Function size limit exceeded — Vercel: The Edge Function "middleware" size is 1.2 MB and your plan size limit is 1 MB. Learn More: https://vercel.link/edge-function-size (Next.js)Edge Function size li…Failed to compile: ESLint errors during next build — Next.js: Failed to compile. ./src/app/page.tsx 12:7 Error: 'x' is assigned a value but never used. @typescript-eslint/no-unused-vars (Next.js)Failed to compile: ES…Feature flags __VUE_OPTIONS_API__ not explicitly defined (esm-bundler) — Vue: You are running the esm-bundler build of Vue — configure your bundler to explicitly replace feature flag globals (__VUE_OPTIONS_API__) (Vue)Feature flags __VUE_O…Module not found: Can't resolve 'x' (Next.js build) — Next.js: Module not found: Can't resolve '@/components/Button' / 'lodash' in '/app/src' (Next.js)Module not found: Can…next build: fetch failed ECONNREFUSED (build-time API) — Next.js: Error occurred prerendering page "/blog" TypeError: fetch failed { cause: Error: connect ECONNREFUSED 127.0.0.1:3000 } (Next.js)next build: fetch fai…Vercel: C…

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