API Route Returns 404 After Refactoring
An API endpoint that was working correctly now returns 404 Not Found errors after Cursor refactored your route definitions. The route is no longer accessible even though the handler exists.
Route registration or path may have been broken during the refactoring.
Error Messages You Might See
Common Causes
- Route path changed or typo introduced in endpoint URL
- Route handler file moved but import not updated
- Router not mounted to app or removed from main server file
- Route method changed (GET to POST) without updating client
- Route registered after 404 catch-all middleware
How to Fix It
Verify route is mounted: app.use('/api', routes). Check full path: app.get('/api/users') vs router.get('/users'). Verify route HTTP method matches client. Place routes before 404 handler. Log all registered routes: app._router.stack.forEach().
Real developers can help you.
Bastien Labelle
Full stack dev w/ 20+ years of experience
prajwalfullstack
Hi Im a full stack developer, a vibe coded MVP to Market ready product, I'm here to help
Rudra Bhikadiya
I build and fix web apps across Next.js, Node.js, and DBs.
Comfortable jumping into messy code, broken APIs, and mysterious bugs.
If your project works in theory but not in reality, I help close that gap.
Omar Faruk
As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience.
My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture.
I played a key role in creating a scalable and maintainable platform to support educators and learners globally.
I'm enthusiastic about embracing new challenges and making meaningful contributions.
BurnHavoc
Been around fixing other peoples code for 20 years.
Yovel Cohen
I got a lot of experience in building Long-horizon AI Agents in production, Backend apps that scale to millions of users and frontend knowledge as well.
Matt Butler
Software Engineer @ AWS
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.**
Kingsley Omage
Fullstack software engineer passionate about AI Agents, blockchain, LLMs.
legrab
I'll fill this later
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
How do I debug route issues?
Log all routes on startup. Use middleware to log every request. Check that full path is correct (include /api prefix).
What's route parameter vs query?
Parameter: /users/:id (in path). Query: /users?sort=name (in URL). Use req.params vs req.query.