SonataAdmin Install issue

Question

I trying to install SonataAdmin on my Symfony Project but at the end of the part-2 of the documention when i'm trying to go on "http://localhost:8000/admin/" I have a error : "You have requested a non-existent service "admin.category" in . (which is being imported from "C:\wamp64\www\Sonata/app/config\routing.yml"). Make sure there is a loader supporting the "sonata_admin" type."

I have no idea why, i give give my all my parameters code maybe it's can help you to understand my problem.

parameters: #parameter_name: value

services:

# default configuration for services in *this* file
_defaults:
    # automatically injects dependencies in your services
    autowire: true
    # automatically registers your services as commands, event subscribers, etc.
    autoconfigure: true
    # this means you cannot fetch services directly from the container via $container->get()
    # if you need to do this, you can override this setting on individual services
    public: false

admin.category:
    class: AppBundle\Admin\CategoryAdmin
    arguments: [~, AppBundle\Entity\Category, ~]
    tags:
        - { name: sonata.admin, manager_type: orm, label: Category }


# makes classes in src/AppBundle available to be used as services
# this creates a service per class whose id is the fully-qualified class name
AppBundle\:
    resource: '../../src/AppBundle/*'
    # you can exclude directories or files
    # but if a service is unused, it's removed anyway
    exclude: '../../src/AppBundle/{Entity,Repository,Tests}'

# controllers are imported separately to make sure they're public
# and have a tag that allows actions to type-hint services
AppBundle\Controller\:
    resource: '../../src/AppBundle/Controller'
    public: true
    tags: ['controller.service_arguments']

# add more services, or override services that need manual wiring
# AppBundle\Service\ExampleService:
#     arguments:
#         $someArgument: 'some_value'

`

The indentation is going wrong i add you a picture of this file. Service code

Answer 1

I think you did a mistake by writing your category.admin service in: Sonata/app/config/routing.yml, instead of Sonata/src/YourAdminBundle/Resources/config/services.yml