Auto Routing and redirect() not working

Auto Routing (Legacy) should work with your first config.
I don't know why it does not work.

Auto Routing (Improved) is much complex than  Legacy for the security reasons.
Read this carefully:
https://codeigniter4.github.io/CodeIgnit...to-routing

See below.  The issue is now redirect().

After returning from vacation I upgraded the core framework to 4.3.1 then walked through all the upgrade path steps. Still no dice, so to troubleshoot I commented out all my defined routes except for the root directory $routes->get('/', 'Login::getIndex');.  Then I ran php spark routes again and the  autorouting began working. So, I figured that it was one of my defined routes breaking auto routing of all controllers. I uncommented each defined route individually down to uncommenting all of them but autorouting remained working. Oh well.

After all that I'm still getting "The route for "testRoute" cannot be found." I can't seem to attach images, so I'll have to write this all in text.

In Routes.php I have:

PHP Code:

$routes->get('/', 'Login::getIndex'); 


That is routing properly. At the end of the getIndex function in the Login controller I have:

PHP Code:

return redirect('testRoute'); 


Under app\Controllers\ I have TestRoute.php

PHP Code:

<?php

namespace App\Controllers;
class TestRoute extends BaseController
{
 public function getIndex()
 {
 echo "hello world";
 }
} 


When I navigate the browser to /public/ it loads getIndex() from Login.php but when it gets to the last line it kicks out:

PHP Code:

The route for "testRoute" cannot be found. 


It doesn't seem to matter what I change the controller to in the redirect() function.

php spark routes clearly shows:

PHP Code:

| GET(auto)    | testRoute                                          |      | \App\Controllers\TestRoute::getIndex                  | honeypot csrf invalidchars | honeypot secureheaders toolbar | 


It's unclear to me why redirect isn't working. Can redirect() no longer be used with auto routing like it could be in CI3? If I navigate to /public/testRoute/ it displays "hello world" as it should.