Mezzio-csrf not working

Questions Mezzio
, ,
1

hi everyone

this is my code to use mezzio-csrf :

//myHandler.php
public function handle(ServerRequestInterface $request) : ResponseInterface {

    $guard = $request->getAttribute(CsrfMiddleware::GUARD_ATTRIBUTE);

    if ($request->getMethod() === 'POST') {
        $data = $request->getBody()->getContents();
        $dataArray = json_decode($data, true);
            
        $token = $dataArray['data']['csrf'] ?? '';
        if (!$guard->validateToken($token, 'test')) {
                return new EmptyResponse(412);
        }
    }

    $csrfToken = $guard->generateToken('test');
    // Create and return a response
    return new JsonResponse(['_csrf'=>$csrfToken]);        
}

//config/pipeline.php
    /*** ***/
    
    $app->pipe(SessionMiddleware::class);
    $app->pipe(CsrfMiddleware::class);
    
    /*** ***/

but, not working

i also checked the session:

$session = $request->getAttribute(SessionMiddleware::SESSION_ATTRIBUTE);

var_dump($session->has('test'));

return false

why???