SONATA ADMIN BUNDLE创建一个BLOCK主页

I have a little problem to realize my own block on the home page of the dashboard. I tried to follow this tutorial : https://sonata-project.org/bundles/block/master/doc/reference/your_first_block.html

But I have get the following error message:

An exception has been thrown during the rendering of a template ("The block service sonata.block.service... does not exist") in ...

Has someone else experienced this same issue, and/or knows how to fix this?

I see you have sonata.block.service.allrequests in your config.yml and sonata.block.service.lastrequests in your services.yml. Shouldn't they be the same?