Serverless PHP slim framework POST does not get posted data

bref slim

src
|
|_public
|    |_index.php
|
|
|_bref.php


the `src\bref.php`
`
<?php declare(strict_types=1);

include __DIR__.'/public/index.php';
`


then the `public/index.php` has the classic slim routing with bref app
`
<?php

use Bref\Bridge\Slim\SlimAdapter;

use \Psr\Http\Message\ServerRequestInterface as Request;
use \Psr\Http\Message\ResponseInterface as Response;

require __DIR__ . '/../vendor/autoload.php';

$app = new \Slim\App(
    require __DIR__ . '/../config/settings.php'
);

...

/**
 * Grouped api
 */
$app->group('/api', function (\Slim\App $app) {
   
    $app->post('/mail', function (Request $request, Response $response) {
        $mail = new Service\Mail($request, $response);
        return $mail->send();
    });
});

...

$bref = new \Bref\Application;
$bref->httpHandler(new SlimAdapter($app));
$bref->run();
`

the route `/api/mail` POST method is working on an apache server (traditional LAMP stack).

Hi,
Were you able to make this work?