```log
2019-09-04 16:32:57 pid:24315 Worker process terminated with exit()/die(). Please do not call exit()/die() in workerman.
2019-09-04 16:32:57 pid:24317 Worker process terminated with exit()/die(). Please do not call exit()/die() in workerman.
2019-09-04 16:32:57 pid:24316 Worker process terminated with exit()/die(). Please do not call exit()/die() in workerman.
2019-09-04 16:32:57 pid:5922 worker exit with status 64000
2019-09-04 16:32:57 pid:5922 worker exit with status 64000
2019-09-04 16:32:57 pid:24318 Worker process terminated with exit()/die(). Please do not call exit()/die() in workerman.
2019-09-04 16:32:57 pid:24320 Exception: Address already in use in /mnt/www/production/sewage/vendor/workerman/workerman/Worker.php:1477
Stack trace:
#0 /mnt/www/production/sewage/vendor/workerman/gateway-worker/src/Gateway.php(482): Workerman\Worker->listen()
#1 : GatewayWorker\Gateway->onWorkerStart(Object(GatewayWorker\Gateway))
#2 /mnt/www/production/sewage/vendor/workerman/workerman/Worker.php(1556): call_user_func(Array, Object(GatewayWorker\Gateway))
```