In Lesson 7 (component composition) routing has not yet been introduced, so the Link component cannot work here yet. Without removing the Link component the app crashes with Uncaught Error: Invariant failed: You should not use <Link> outside a <Router>
In Lesson 7 (component composition) routing has not yet been introduced, so the Link component cannot work here yet. Without removing the Link component the app crashes with
Uncaught Error: Invariant failed: You should not use <Link> outside a <Router>