tp6 swoole 定时任务运行一段时间挂了

 来自CRMEB的案例代码：

/**
     * 开启定时器
     */
    protected function timer(App $app)
    {
        $last = time();
        $task = [6 => $last, 10 => $last, 30 => $last, 60 => $last, 180 => $last, 300 => $last];
        $this->timer = Timer::tick($this->interval, function () use (&$task, $app) {
            try {
                $now = time();
                event('Task_2');
                foreach ($task as $sec => $time) {
                    if ($now - $time >= $sec) {
                        $task[$sec] = $now;
                        event('Task_' . $sec);
                    }
                }
            } catch (\Throwable $e) {
                $app->log->error($e->getMessage());
            }
        });
    }

已在www/addons/app/event.php里面添加订阅事件：

'subscribe' => [
        app\subscribes\TaskSubscribe::class
    ],

定时任务运行一段时间挂了，报错：

The app object has not been initialized
/www/wwwroot/zsff.com/addons/vendor/topthink/think-swoole/src/Sandbox.php 135

#0 /www/wwwroot/zsff.com/addons/vendor/topthink/think-swoole/src/Sandbox.php(69): think\\swoole\\Sandbox->getApplication()
#1 /www/wwwroot/zsff.com/addons/vendor/topthink/framework/src/think/Container.php(72): think\\swoole\\Sandbox->think\\swoole\\{closure}()
#2 /www/wwwroot/zsff.com/addons/vendor/topthink/framework/src/think/Facade.php(47): think\\Container::getInstance()
#3 /www/wwwroot/zsff.com/addons/vendor/topthink/framework/src/think/Facade.php(96): think\\Facade::createFacade()
#4 /www/wwwroot/zsff.com/addons/vendor/topthink/framework/src/helper.php(228): think\\Facade::__callStatic(\'trigger\', Array)
#5 /www/wwwroot/zsff.com/addons/app/webscoket/SwooleWorkerStart.php(97): event(\'Task_2\')
#6 {main}

订阅的事件居然不见了，所以导致调用不到。

日志文件里面还有：WARNING    Worker_reactor_try_to_exit() (ERRNO 9101): worker exit timeout, forced termination

以下配置没见有效果：

'max_request' => 100000, // 控制每个Worker进程的最大请求次数 https://wiki.swoole.com/#/server/setting?id=max_request

找了不少资料也没能解决，最后！！！

我在catch里面又重新订阅一次事件：

 Event::subscribe('app\subscribes\TaskSubscribe');

目前运行还算稳定