Custom Status Code Pages Not Fully Implemented in Next.js

[jaseel0]

Description

Our Next.js project has custom status code pages (pages/404.js and pages/_error.js). Some pages are incomplete or broken, and certain HTTP status codes (e.g., 401 Unauthorized, 403 Forbidden) are not currently testable because the app does not have a login/authentication system. This impacts the user experience and automated documentation tools.

Steps to Reproduce

1. Run the Next.js project locally or deploy it.
2. Navigate to a non-existent route to trigger the 404 page.
3. Trigger a server error (500) via an API route or manually throw an error.
4. Observe the layout and messages on the status code pages.
5. Note: 401/403 pages cannot be tested without an authentication system.

Expected Behavior

• 404 and 500 pages render correctly with consistent layout and user-friendly messages.
• Error pages are responsive and accessible on all devices.
• If authentication is added in the future, 401 and 403 pages should be properly implemented.

Actual Behavior

• 404 and 500 pages may have layout issues or missing content.
• 401/403 pages are not implemented/testable because no login/auth system exists.

Screenshots/Logs

• Attach screenshots of broken pages or console errors.
• Include any server logs or terminal output.

Additional Context

• Check pages/404.js and pages/_error.js for layout or content issues.
• Consider adding placeholder 401/403 pages for future authentication support.
• Ensure server-side rendering does not break when generating these pages.