URI Routing Help - 23.07.19

PHP Code:

$route['mf'] = 'mf/index'; 


This route makes no sense. It says: if the url is http://yourwebsite/mf, then point to the index method inside the mf controller.
This is default behaviour if the url has only one segment (controller), so you don't need an extra route for that.
Just make sure the mf controller has an index method.