How to Fix Route Not Found Error in Remix

The route not found error in Remix usually happens when the route file is missing or incorrectly named. Ensure your route files are placed inside the app/routes folder with the correct file name matching the URL path.

Why This Happens

This error occurs because Remix uses a file-based routing system. If a route file is missing, misnamed, or placed outside the app/routes folder, Remix cannot find the route and shows a 'route not found' error.

jsx

/* Incorrect file placement or naming */
// File placed outside routes folder or wrong name
// app/mypage.jsx instead of app/routes/mypage.jsx

export default function MyPage() {
  return <h1>My Page</h1>;
}

Output

Error: Route not found for URL '/mypage'

The Fix

Move your route file inside the app/routes folder and name it to match the URL path. For example, to create a route for /mypage, create app/routes/mypage.jsx. This lets Remix find and render the route correctly.

jsx

// Correct file placement and naming
// app/routes/mypage.jsx

export default function MyPage() {
  return <h1>My Page</h1>;
}

Output

<h1>My Page</h1> rendered at URL '/mypage'

Prevention

Always follow Remix's file-based routing conventions: place route files inside app/routes and name them to match the URL paths. Use consistent naming and folder structure. Use your editor or Remix dev server to check for missing routes early.

Enable Remix's dev server warnings and use linting tools to catch misplaced files. Regularly test your routes by visiting URLs during development.

Related Errors

404 Not Found: Happens when the route exists but the server can't find the resource. Check your server config.

Module not found: Occurs if you import a route component incorrectly. Verify import paths.

Key Takeaways

Remix routes must be files inside the app/routes folder named to match the URL path.

Misplaced or misnamed route files cause 'route not found' errors.

Use Remix dev server and linting to catch routing mistakes early.

Test routes by visiting URLs during development to confirm they load.

Related errors include 404 and module import errors, which have different fixes.