Possible issue with router->controllerName()

Hi there,
In a filter I'm doing the following:

Code:

  public function before(RequestInterface $request, $arguments = null)
    {
        $router = \Config\Services::router();
        $method = $router->methodName();
        $controllerNameArray = explode("\\", $router->controllerName()); # breaks CI hot reload

This works fine until I turn on "hot reload" whereby I get the following error in the log file:

Code:

CRITICAL - 2024-12-11 12:54:32 --> TypeError: explode(): Argument #2 ($string) must be of type string, Closure given
[Method: GET, Route: __hot-reload]
in APPPATH/Filters/Auth.php on line 35.
1 APPPATH/Filters/Auth.php(35): explode()

It's not critical as I rarely use hot reload, however it could also be me doing something wrong.