trying to install FOSUserBundle bundle from below link How to install 3rd party Bundles but getting this error :
[Symfony\Component\Config\Definition\Exception\InvalidConfigurationException] The child node "db_driver" at path "fos_user" must be configured.
You have forgotten to add the configuration for FOSUserBundle in your
app/config/config.yml or at least did not provide a value for
You have to configure at least the db_driver , firewall and your user-class otherwise the configuration will throw an
# app/config/config.yml fos_user: db_driver: orm # other valid values are 'mongodb', 'couchdb' and 'propel' firewall_name: main user_class: Acme\UserBundle\Entity\User
Please see the documentation chapter Step 5: Configure the FOSUserBundle.
I solve similar error by updating composer :
May this help.