Repository->findAll gives unknown database error - php

Question

I just started out using symfony. I installed SF4 with twig, doctrine maker, ...
I created my database 'Autotrader', I created a migration and migrated it.
But whenever I try to get the data from the database I get the following error:
This is the code I'm using:
<?php
namespace App\Controller;
use App\Entity\Car;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
class CarController extends Controller
{
public function index()
{
$repository = $this->getDoctrine()->getRepository('App:Car');
$cars = $repository->findAll();
return $this->render('Car/list.html.twig', array(
"title" => "Our cars",
'cars' => $cars
));
}
}
Parameter config:
parameters:
# Adds a fallback DATABASE_URL if the env var is not set.
# This allows you to run cache:warmup even if your
# environment variables are not available yet.
# You should not need to change this value.
env(DATABASE_URL): ''
doctrine:
dbal:
# configure these for your database server
driver: 'mysql'
server_version: '5.7'
charset: 'utf8mb4'
dbname: 'autotrader'
host: '127.0.0.1'
port: 3306
user: 'root'
password: 'secret'
# With Symfony 3.3, remove the `resolve:` prefix
url: '%env(resolve:DATABASE_URL)%'
orm:
auto_generate_proxy_classes: '%kernel.debug%'
naming_strategy: doctrine.orm.naming_strategy.underscore
auto_mapping: true
mappings:
App:
is_bundle: false
type: annotation
dir: '%kernel.project_dir%/src/Entity'
prefix: 'App\Entity'
alias: App

Answer 1

This is the unknown database error.
Are you sure you have created Autotrader db at the correct localhost path and the port number mentioned in doctrine.yml file?
Also, In your doctrine.yml replace
dbname: 'autotrader' with dbname: Autotrader
and try again!!

Answer 2

I figured out what the problem was.
I was running my app in vagrant/homestead and migrated localy, no wonder the DB wasn't found