Unable to retrieve request / response from LogRecord context

[web-fu]

My problem:
I want to save request and response for each call in a db table
I created a monolog handler in a symfony project.
I'm able to catch the log sent by the library listening the channell eight_points_guzzle, but the LogRecord has an empty context.

I'm a bit confused because the LogMiddleware populate the context (https://github.com/8p/EightPointsGuzzleBundle/blob/master/src/Middleware/LogMiddleware.php)

Am I missing something?

eight_points_guzzle.yaml

eight_points_guzzle:
    logging: true

    profiling: true

    slow_response_time: 1000

    clients:
        MyClient:
            logging: true

monolog.yaml

monolog:
    handlers:
        db:
            type: service
            channels: ['eight_points_guzzle']
            id: monolog.eight_points_guzzle_db_handler

services.yaml

services:
  # Monolog + Eight Points
  monolog.eight_points_guzzle_db_handler:
    class: App\Logger\ReqeuestLogger
    arguments: ['@doctrine.orm.entity_manager']

RequestLogger.php

class RequestLogger extends AbstractProcessingHandler
{
    private EntityManagerInterface $entityManager;

    public function __construct(EntityManagerInterface $entityManager, $level = Level::Debug, bool $bubble = true)
    {
        $this->entityManager = $entityManager;
        parent::__construct($level, $bubble);
    }

    protected function write(LogRecord $record): void
    {
       //$record['context'] should contain request and response but is empty
    }
}