Symfony4 Inject env variable and autowire error "Cannot autowire service" - autowired

Question

I'm trying to create a service who receive two parameters defined in .env file.
Symfony throws the next error:
Cannot autowire service
"App\Modules\Sales\Infrastructure\Persistence\Http\HttpSalesRepository":
argument "$credentials" of method "__construct()" is type-hinted "ar
ray", you should configure its value explicitly.
This is my service.yml file:
parameters:
services:
_defaults:
autowire: true # Automatically injects dependencies in your services.
autoconfigure: true # Automatically registers your services as commands, event subscribers, etc.
App\:
resource: '../src/*'
exclude: '../src/{DependencyInjection,Entity,Migrations,Tests,Kernel.php}'
App\Controller\:
resource: '../src/Controller'
tags: ['controller.service_arguments']
imports:
- { resource: "../src/Modules/Sales/Infrastructure/DependencyInjection/sales_module.yml" }
This is the code inside sales_module.yml:
services:
module_sales.http.sales.repository:
public: false
class: App\Modules\Sales\Infrastructure\Persistence\Http\HttpSalesRepository
arguments: ["%env(json:CREDENTIALS)%", "%env(json:TAGS)%"]
And this the HttpSalesRepository class
class HttpSalesRepository implements SalesRepository
{
private $credentials;
private $tags;
public function __construct(array $credentials, array $tags)
{
$this->credentials = $credentials;
$this->tags = $tags;
}
...
}
And this is the .env file:
###> symfony/framework-bundle ###
APP_ENV=dev
APP_SECRET=xxxxxx
###< symfony/framework-bundle ###
###> doctrine/doctrine-bundle ###
DATABASE_URL=mysql://xxx:yyy#mysql:3306/db
###< doctrine/doctrine-bundle ###
###> application/variables ###
CREDENTIALS='{"username":"email#test.com","password":"secretpass"}'
TAGS='["tag1","tag2","tag3"]'
###< application/variables ###
Any ideas?

Answer 1

You can name the service arguments to explicitly match the parameter name to the value, instead of just having the argument list:
services:
module_sales.http.sales.repository:
public: false
class: App\Modules\Sales\Infrastructure\Persistence\Http\HttpSalesRepository
arguments:
$credentials: "%env(json:CREDENTIALS)%"
$tags: "%env(json:TAGS)%"]

Answer 2

Is not the best option, but is a work arround while I find the final solution. If I define the service in config/services.yaml, the variables are passed to the services perfectly.
App\Modules\Sales\Infrastructure\Persistence\Http\HttpSalesRepository:
public: false
arguments: ["%env(json:AMAZON_AFFILIATES_CREDENTIALS)%", "%env(json:AMAZON_AFFILIATES_TAGS)%"]
Any other solution will be welcomed.