Context :
Using Ibexa 3.3 CMS based on Symfony 5.4 Upgrading to Ibexa 4.0.8.
When compiling the container, I get the message :
You have requested a synthetic service ("kernel"). The DIC does not know how to construct this service.
I've read that this means it's trying to instantiate a "kernel" service but I don't have any service in my source code that does that