I have just installed FOSUser bundle and initialized it in AppKernel's registereBundles() function , when I run
console cache:clear
It get
[Symfony\Component\Config\Definition\Exception\InvalidConfigurationException] The child node "db_driver" at path "fos_user" must be configured.
My understanding was that unless or until I am not using a bundle it should not interfere in application flow. I wonder why I get this issue when I have done nothing with FOSUserBundle so far