Cursor deployment

Next.js Build Error After Changes

After Cursor refactored your Next.js application, the build command fails. The application won't build for production.

The refactored code violates Next.js requirements or broke the build configuration.

Error Messages You Might See

Build failed Unexpected server-only code in client component Image is missing required props API route not found
Build failedUnexpected server-only code in client componentImage is missing required propsAPI route not found

Common Causes

  1. Server component using client-only code (window, hooks in server)
  2. API route using wrong export (named instead of default)
  3. Image dimensions not specified (if using Image component)
  4. Dynamic import syntax incorrect for Next.js
  5. Environment variables not exposed to client

How to Fix It

Add 'use client' directive for client components. API routes: export default function handler(req, res) {}. Images: use next/image with width/height. Dynamic imports: dynamic(() => import('component'), {ssr: false}). Env: prefix with NEXT_PUBLIC_ for client access.

Real developers can help you.

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Matthew Jordan Matthew Jordan I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job. Tejas Chokhawala Tejas Chokhawala Full-stack engineer with 5 years experience building production web apps using React, Next.js and TypeScript. Focused on performance, clean architecture and shipping fast. Experienced with Supabase/Postgres backends, Stripe billing, and building AI-assisted developer tools. Alvin Voo Alvin Voo I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. 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Krishna Sai Kuncha Krishna Sai Kuncha Experienced Professional Full stack Developer with 8+ years of experience across react, python, js, ts, golang and react-native. Developed inhouse websearch tooling for AI before websearch was solved : ) Caio Rodrigues Caio Rodrigues I'm a full-stack developer focused on building practical and scalable web applications. My main experience is with **React, TypeScript, and modern frontend architectures**, where I prioritize clean code, component reusability, and maintainable project structures. I have strong experience working with **dynamic forms, state management (Redux / React Hook Form), and complex data-driven interfaces**. I enjoy solving real-world problems by turning ideas into reliable software that companies can actually use in their daily operations. Beyond coding, I care about **software quality and architecture**, following best practices for componentization, code organization, and performance optimization. I'm also comfortable working across the stack when needed, integrating APIs, handling business logic, and helping transform prototypes into production-ready systems. My goal is always to deliver solutions that are **simple, efficient, and genuinely useful for the people using them.**

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Frequently Asked Questions

What's the difference between server and client components?

Server components (default) run on server, no bundle size cost. Client need 'use client' directive, bundle included. Use server when possible.

How do I use environment variables in Next.js?

Prefix with NEXT_PUBLIC_ to expose to client. Access with process.env.NEXT_PUBLIC_VAR in browser.

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