From the documentation, Slim found a controller router, and when I call it in code, I get an error. Help with a problem, please

Slim Application Error A website error has occurred. Sorry for the temporary inconvenience.

class MyController { protected $ci; // Constructor public function __construct(ContainerInterface $ci) { $this->ci = $ci; } public function method1($request, $response, $args) { // your code // to access items in the container... $this->ci->get(''); } } 

Hooked up so

 $app->get('/method1', '\MyController:method1'); $app->run(); 

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