我有一个项目设置与rabbitmq，它的工作发送消息，也接收消息从laravel到laravel使用默认的作业处理程序提供的包

'job' => VladimirYuldashev\LaravelQueueRabbitMQ\Queue\Jobs\RabbitMQJob::class,

但是我想从python甚至从rabbitmq Jmeter 板本身接收消息，
因此，我配置了作业处理程序

'job' => \App\Jobs\RabbitMQJob::class,

use VladimirYuldashev\LaravelQueueRabbitMQ\Queue\Jobs\RabbitMQJob as BaseJob;

class RabbitMQJob extends BaseJob
{

    /**
     * Fire the job.
     *
     * @return void
     */
    public function fire()
    {
        $payload = $this->payload();

        Log::notice($payload);

        $class = HandlePythonResponse::class;
        $method = 'handle';

        ($this->instance = $this->resolve($class))->{$method}($this, $payload);

        $this->delete();
    }
}

每次我向此应用程序发送消息时，都会收到以下错误

[2022-04-28 12:01:33] local.ERROR: Trying to access array offset on value of type null {"exception":"[object] (ErrorException(code: 0): Trying to access array offset on value of type null at /Users/angwamosees/Documents/moses/app1/vendor/laravel/framework/src/Illuminate/Queue/Jobs/Job.php:315)

请问有没有人知道为什么rabbit mq会发送空消息