Symfony error The class XXX was not found in the chain configured namespaces XXX

Question

There are some other questions on this subject already, but none of them were really helpful. I am new to Symfony, so it\'s pretty hard to get my head around it.

I

Answer 1

My mistake was that I forgot to add distant bundles/bundles in "vendor" inside my AppKernel file.

They weren't registered in the registerBundles() method.