@ashok Looks like you are not setup your Url Route properly in your config/routes.php file. when you are interested to pass any route parameter to your controller action you should config your route proper way. although your question is not written detailedly.
i hope you will get much more information from this articles.
https://book.cakephp.org/3.0/en/development/routing.html#passing-parameters-to-action
Thank you.