api platform - Unable to generate an IRI for the item

I'm starting with API Platform and I'm using the example entity "Foo":

namespace AppBundle\Entity;use ApiPlatform\Core\Annotation\ApiResource;use Doctrine\ORM\Mapping as ORM;/** * Foo * * @ORM\Table(name="foo") * @ApiResource * @ORM\Entity */class Foo{    /**     * @var string     *     * @ORM\Column(name="bar", type="string", length=255, nullable=false)     */    private $bar;    /**     * @var integer     *     * @ORM\Column(name="id", type="integer")     * @ORM\Id     * @ORM\GeneratedValue(strategy="IDENTITY")     */    private $id;}

I succesfully see the new Entity in dashboard (See image):

API Platform Dhasboard

And I had the following error when I try to get all Foo collection:

curl -X GET "http://127.0.0.1:8000/foos" -H "accept: application/json"    {"type": "https://tools.ietf.org/html/rfc2616#section-10","title": "An error occurred","detail": "Unable to generate an IRI for the item of type \"AppBundle\\Entity\\Foo\"","trace": [    {"namespace": "","short_class": "","class": "","type": "","function": "","file": "/home/xxxx/api/vendor/api-platform/core/src/Bridge/Symfony/Routing/IriConverter.php","line": 107,"args": []    },

I tried different formats and check the the routes too:

 julian@js:~/xxxxx/api$ ./bin/console debug:router ------------------------------- -------- -------- ------ -----------------------------------   Name                            Method   Scheme   Host   Path                                ------------------------------- -------- -------- ------ -----------------------------------   _wdt                            ANY      ANY      ANY    /_wdt/{token}                        _profiler_home                  ANY      ANY      ANY    /_profiler/                          _profiler_search                ANY      ANY      ANY    /_profiler/search                    _profiler_search_bar            ANY      ANY      ANY    /_profiler/search_bar                _profiler_phpinfo               ANY      ANY      ANY    /_profiler/phpinfo                   _profiler_search_results        ANY      ANY      ANY    /_profiler/{token}/search/results    _profiler_open_file             ANY      ANY      ANY    /_profiler/open                      _profiler                       ANY      ANY      ANY    /_profiler/{token}                   _profiler_router                ANY      ANY      ANY    /_profiler/{token}/router            _profiler_exception             ANY      ANY      ANY    /_profiler/{token}/exception         _profiler_exception_css         ANY      ANY      ANY    /_profiler/{token}/exception.css     _twig_error_test                ANY      ANY      ANY    /_error/{code}.{_format}             api_entrypoint                  ANY      ANY      ANY    /{index}.{_format}                   api_doc                         ANY      ANY      ANY    /docs.{_format}                      api_jsonld_context              ANY      ANY      ANY    /contexts/{shortName}.{_format}              api_foos_get_collection         GET      ANY      ANY    /foos.{_format}                      api_foos_post_collection        POST     ANY      ANY    /foos.{_format}                      api_foos_get_item               GET      ANY      ANY    /foos/{id}.{_format}                 api_foos_put_item               PUT      ANY      ANY    /foos/{id}.{_format}                 api_foos_delete_item            DELETE   ANY      ANY    /foos/{id}.{_format}                ------------------------------- -------- -------- ------ ----------------------------------- 

It's possible what I need some special library in my server? What I'm doing wrong?

Thanks in advance!