Symfony4, my_receiver is not supported error

[anthipapa]

I tried using bernard-bundle in my Symfony 4.3 project to run a basic helloWorld background task, but when I try to run bernard: consume I get an error

In SimpleRouter.php line 38:
Given "my_receiver" is not supported. 

This is the services.yaml part

 my_receiver:
        class: App\BackgroundTasks\Receiver\
        tags:
            - { name: bernard.receiver, message: 'HelloWorld' }

It says the error is in SimpleRouter, so I tried debugging there using

var_dump($name);
var_dump($receiver);
var_dump(class_exists($receiver)); 

and I got

string(10) "HelloWorld"
string(11) "my_receiver"
bool(false)

Is this a bug because of Symfony? Or am I missing something?

[acrobat]

I think the class you provided for the my_receiver service is incorrect. In you example above it is class: App\BackgroundTasks\Receiver\, but it looks like to forgot the actual class as the end of the namespace of a \ too much at the end.

[anthipapa]

I have already tried
App\BackgroundTasks\Receiver
and
App\BackgroundTasks\Receiver\Receiver
and both result in the same error I mentioned before.

[acrobat]

What is the actual namespace (fqcn) of the class you want register as a receiver?

[anthipapa]

App\BackgroundTasks, so theoretically it should be App\BackgroundTasks\Receiver for the class

[acrobat]

Can you paste the content of the receiver class?

[anthipapa]

After your question I tried both an empty class, and a basic function. Is there specific content the class should have for it to work?