老师您好，我在控制器中投递异步任务。返回false,看了半天没明白为什么。请求帮助！
异步任务

<?php

namespace App\Task;
use EasySwoole\EasySwoole\Swoole\Task\AbstractAsyncTask;
class Message extends AbstractAsyncTask
{
    protected function run($taskData, $taskId, $fromWorkerId, $flags = null)
    {
        // TODO: Implement run() method.
        echo "任务执行了\n";
        return true;
    }
    
    protected function finish($result, $task_id)
    {
        // TODO: Implement finish() method.
    }
}

在控制器中投递异步任务

<?php
namespace App\HttpController\Api;
use App\HttpController\Model\BannerModel;
use App\HttpController\Service\Redis;
use App\Task\Message;
use EasySwoole\EasySwoole\Swoole\Task\TaskManager;
class Banner extends Base
{
    public function banner()
    {
        $data = (new BannerModel())->getBanner();
        TaskManager::async(Message::class);
        return $this->writeJson(200, $data, 'OK');
    }  
}

控制台没有输出。有点懵，不知道为什么异步任务不执行！我的环境如下：
swoole version 4.2.13
php version 7.2.15-0ubuntu0.18.04.1
easy swoole 3.1.15