Cannot load resource "". Make sure there is a loader supporting the "rest" type

I face this Error while creating a REST API using Symfony V4.99 and fosrestbundle.

When I Run php bin/console debug:router I get this:

Cannot load resource "App\Controller\ListController". Make sure there is a loader supporting the "rest" type.

Here is the code of Routes.yaml:

lists:
    type      : rest
    resource  : App\Controller\ListController
    prefix    : api

Here is the code of fos_rest.yaml :

fos_rest: 
    format_listener:
        rules:
            - { path: ^/,  fallback_format: json, priorities: [ 'json' ] }

    exception:
        enabled: true

    view:
        view_response_listener:  'force'
        formats:
            json: true 

Here is the code of ListController.php:

<?php

namespace App\Controller;

use Symfony\Component\Routing\Annotation\Route;
use FOS\RestBundle\Controller\AbstractFOSRestController;
use FOS\RestBundle\Controller\Annotations as Rest;

class ListController extends AbstractFOSRestController
{
    public function getListsAction()
    {

    }
}