You have to wrap your Route's in a <Switch>
block because <Switch>
is unique in that it renders a route exclusively.
At first you need to add Switch
to your imports:
import { Switch, Router, Route } from 'react-router'
Then define the routes within <Switch>
block:
<Router>
<Switch>
<Route {/* ... */} />
<Route {/* ... */} />
</Switch>
</Router>