react-router-dom error 404 code example
Example 1: react router 404 redirect
<Route path='*' exact={true} component={My404Component} />
// Or don't mention path
<Route component={My404Component} />
Example 2: react router catch all 404
<Switch>
<Route path="/" exact component={Home}/>
<Route path="/about" component={About}/>
<Route component={Page404} />
</Switch>