Ошибка HTTP ERROR 500: Страница недоступна, пока не может обработать этот запрос

public function execute($registry, array $args = array()) {
// Stop any magical methods being called
if (substr($this->method, 0, 2) == '__') {
return new \Exception('Error: Calls to magic methods are not allowed!');
}

$file = DIR_APPLICATION . 'controller/' . $this->route . '.php';
$class = 'Controller' . preg_replace('/[^a-zA-Z0-9]/', '', $this->route);

// Initialize the class
if (is_file($file)) {
include_once($file);

43 СТРОКА $controller = new $class($registry);
} else {
return new \Exception('Error: Could not call ' . $this->route . '/' . $this->method . '!');
}

$reflection = new ReflectionClass($class);

if ($reflection->hasMethod($this->method) && $reflection->getMethod($this->method)->getNumberOfRequiredParameters() <= count($args)) {
51 СТРОКа return call_user_func_array(array($controller, $this->method), $args);
} else {
return new \Exception('Error: Could not call ' . $this->route . '/' . $this->method . '!');
}
}
}