What is the URL where the issue is happening

https://roadmap.sh/questions/redux

What browsers are you seeing the problem on?

Chrome

Describe the Bug

Description

The "Not found" page on roadmap.sh is rendering the navbar twice.

Steps to Reproduce

1. Go to https://roadmap.sh/questions/redux (or any invalid route)
2. Observe the page layout

Expected Behavior

Only a single navbar should be displayed at the top of the page.

Actual Behavior

Two identical navbars are rendered one below the other.

Screenshots

Possible Cause (Optional)

Looks like the layout component or header is being included twice for the error/404 page.

Environment

• Browser: Chrome
• OS: Windows

Output from browser console (if any)

No response

Participation

• I am willing to submit a pull request for this issue.