Routes Problem

[mmuratts]

Hello there, I have route problem

$routes[] = [ 'method' => 'get', 'route' => '/ping', 'handler' => ['Controllers\ExampleController', 'pingAction'] ];

does not work but when I write

$routes[] = [ 'method' => 'get', 'route' => '/ping', 'handler' => function() { echo "test"; } ];

its work.

thanks.