404 page in REACT

Question

I created the component NotFound and it works fine when I go to a page that doesn\'t exist. But the same page it\'s appearing in all my pages, not only the one

Answer 1

All below example works fine:

 // empty ""
 // star *
 // without path

Or if you want to return a simple 404 message without any component:

 (
404 Not found 
)} />