account_book/app/Libs/AppException.php

<?php

namespace App\Libs;

use Exception;

class AppException extends Exception
{

    public ?string $payload;

    public function __construct(string $message = '', int $code = 500, string $payload = null)
    {
        parent::__construct($message, $code);
        $this->payload = $payload;
    }

    public function getPayload(): ?string
    {
        return $this->payload;
    }

}