Cakephp 3.x routes and resources

1

hello
i am new in cakephp and i am trying to develope an exercise about ajax call and datatables jquety plugin

  1. data are retrieved from a table called ousers
  2. clicking on a button fires the ajax request which should fill the table

this is the controller Ousers (omitting edit, delete view…)

<?php
namespace App\Controller;

use App\Controller\AppController;

class OusersController extends AppController
{

    /**
     * Index method
     *
     * @return void
     */
    public function initialize() {
        parent::initialize();
     
        
    }


    public function index()
    {
			//nothing to do...
    }  
    
    public function getusers(){
        $this->viewBuilder()->setTemplate('index');
        $data=$this->request->getData(['Ousers.nome','Ousers.cognome','Ousers.email']);
        $len=5;
        $filtered=$len;
        $draw=$this->request->getParam('draw');
        $json_data=[
            'draw'=>$draw,
            'recordsTotal'=> 5,
            'recordsFiltered'=> 5,
            'data'=>$data
        ];
        echo json_encode($json_data);
    }
}

Following is the view (index.ctp)

<div>
    <table id="users-table" class="display" cellspacing="0" width="100%">
        <thead>
            <tr>
                
                <th>nome</th>
                <th>cognome</th>
                <th>email</th>
            </tr>
        </thead>
    </table>
</div>
<div class="upload-frm">
    <input type="button" onclick="jsUsers();" value="click" />
</div>

and finally the js script

function jsUsers(){
        $('#users-table').dataTable( {
            "processing": true,
            "serverSide": true,
            "ajax":{
            type: 'post',
            url: "<?php echo Cake\Routing\Router::url(
            array(
               'controller'=>'Ousers',
               'action'=>'getusers',
                '_ext'=>'json',
               '_full' => true //for full url path
         ));?>",
            dataType: 'json',
            
            error: function(e) {
                    alert("An error occurred: " + e.responseText.message);
                    console.log(e);
            }
        },"columns": [
                { "ousers": "id" },
                { "ousers": "nome" },
                { "ousers": "cognome" },
                { "ousers": "email" }
            ]
        } );
    }

i connect to http://localhost:8765/ousers/ then click on the button and i get a message like
"message": “Controller class Getusers could not be found.”,
** rl**": “/ousers/getusers.json”,**

so i think the problem is in the routing configuration for the resource:

Router::scope(’/ousers’, function ($routes) {
$routes->extensions([‘json’]);
$routes->resources(‘Ousers’);
$routes->fallbacks(‘DashedRoute’);
});

what is missing? thanks