Node.js heroku上托管的bot不断崩溃

当我在heroku上托管messenger bot应用程序时，它可以正常工作一段时间，但几分钟后崩溃，然后我必须通过cli重新启动heroku应用程序，有时它会自动重新开始工作。我不知道为什么会发生这种情况

这是我的文件

web: node index.js

我尝试了几种解决方案，但几分钟后它一直崩溃。

像

在cli中键入此项

heroku ps:scale web=1

这就是我设置端口的方式

var app = express()
app.set('port', (process.env.PORT) || 5000)
// SPIN UP SERVER
app.listen(app.get('port'), function () {
  console.log('Running on port', app.get('port'))
})

日志

$heroku日志
2017-03-07T08:56:53.964138+00:00 heroku[路由器]：at=错误代码=H10 desc=“App crash”method=POST path=“/webhooks”host=safe-temple-90677.herokuapp.com请求id=8181819D8F-9fc2-4d72-b3a2-b7fde4930417 fwd=“31.13.113.64”dyno=connect=service=status=503字节=
2017-03-07T08:58:07.116769+00:00 heroku[路由器]：at=错误代码=H10 desc=“App crash”method=POST path=“/webhooks”host=safe-temple-90677.herokuapp.com请求\u id=9df360fb-9b55-4ab2-a67b-8D66B1D6DB7 fwd=“31.13.102.107”dyno=connect=service=status=503字节=
2017-03-07T08:59:21.085472+00:00 heroku[路由器]：at=错误代码=H10 desc=“应用程序崩溃”方法=POST path=“/webhooks”主机=safe-temple-90677.herokuapp.com请求\u id=0742553f-e506-491c-80e4-1539e1decf4c fwd=“31.13.114.78”dyno=connect=service=status=503字节=
2017-03-07T09:00:40.538513+00:00 heroku[路由器]：at=错误代码=H10 desc=“App crash”method=POST path=“/webhooks”host=safe-temple-90677.herokuapp.com请求\u id=717d0506-c098-49fa-921e-125fe7286a04 fwd=“31.13.113.176”dyno=connect=service=status=503字节=
2017-03-07T09:01:56.032586+00:00 heroku[路由器]：at=错误代码=H10 desc=“App crash”method=POST path=“/webhooks”host=safe-temple-90677.herokuapp.com请求\u id=93ba9709-a374-4532-8e73-b41b6216e406 fwd=“31.13.113.84”dyno=connect=service=status=503字节=
2017-03-07T09:03:17.015196+00:00 heroku[路由器]：at=错误代码=H10 desc=“App crash”method=POST path=“/webhooks”host=safe-temple-90677.herokuapp.com请求\u id=d2afcdbb-e079-4e81-8a4f-6bba3f831fde fwd=“31.13.110.97”dyno=connect=service=status=503字节=
2017-03-07T09:04:40.339415+00:00 heroku[路由器]：at=错误代码=H10 desc=“应用程序崩溃”方法=POST path=“/webhooks”主机=safe-temple-90677.herokuapp.com请求\u id=a1d0f243-7afc-4f19-9378-e916d1651a09 fwd=“31.13.102.125”dyno=connect=service=status=503字节=
2017-03-07T09:06:02.989125+00:00 heroku[路由器]：at=错误代码=H10 desc=“应用程序崩溃”方法=POST path=“/webhooks”主机=safe-temple-90677.herokuapp.com请求\u id=224b6a85-6607-4cb1-b294-764b9f36252a fwd=“31.13.113.90”dyno=connect=service=status=503字节=
2017-03-07T09:07:29.479672+00:00 heroku[路由器]：at=错误代码=H10 desc=“App crash”method=POST path=“/webhooks”host=safe-temple-90677.herokuapp.com请求id=350e5974-741a-476a-b59b-cfd7c455bdf7 fwd=“31.13.102.102”dyno=connect=service=status=503字节=
2017-03-07T09:08:45.760868+00:00 heroku[路由器]：at=错误代码=H10 desc=“App crash”method=POST path=“/webhooks”host=safe-temple-90677.herokuapp.com请求id=4b8194fb-85a6-4595-a680-1c17f5af5bf7 fwd=“31.13.110.126”dyno=connect=service=status=503字节=
2017-03-07T09:10:09.100216+00:00 heroku[路由器]：at=错误代码=H10 desc=“应用程序崩溃”方法=POST path=“/webhooks”主机=safe-temple-90677.herokuapp.com请求\u id=9cad0806-1c4f-45c7-a617-15ecc80201e7 fwd=“31.13.114.78”动态连接=服务=状态=503字节=
2017-03-07T09:11:28.519846+00:00 heroku[路由器]：at=错误代码=H10 desc=“App crash”method=POST path=“/webhooks”host=safe-temple-90677.herokuapp.com请求\u id=5df0438d-8bf5-4db2-bf88-2293e7e8fa81 fwd=“31.13.102.110”dyno=connect=service=status=503字节=
2017-03-07T09:12:54.962281+00:00 heroku[路由器]：at=错误代码=H10 desc=“App crash”method=POST path=“/webhooks”host=safe-temple-90677.herokuapp.com请求\u id=b352a060-d6ae-4612-ad32-a1c88836ce79 fwd=“31.13.102.127”dyno=connect=service=status=503字节=
2017-03-07T09:13:03.133808+00:00 heroku[web.1]：状态从崩溃变为启动
2017-03-07T09:13:04.529654+00:00 heroku[web.1]：使用命令'node index.js启动进程`
2017-03-07T09:13:06.597891+00:00应用程序[网站1]：抓住智慧
2017-03-07T09:13:06.637063+00:00应用程序[web.1]：在端口35231上运行
2017-03-07T09:13:08.215961+00:00 heroku[web.1]：状态从启动更改为启动
2017-03-07T09:14:15.236302+00:00 heroku[路由器]：at=info method=POST path=“/webhooks”host=safe-temple-90677.herokuapp.com请求\u id=9a7d82c7-abb5-44c8-9e94-7f98e32cf1b fwd=“31.13.110.99”dyno=web.1 connect=1ms服务=90ms状态=200字节=201
2017-03-07T09:14:15.769291+00:00应用程序[web.1]：执行合并操作
2017-03-07T09:14:16.181301+00:00应用程序[web.1]：正在执行消息：2017-03-07 13:00:00拉各斯天气预报
2017-03-07T09:14:16.182548+00:00应用程序[web.1]：WIT想与之通话：1781786975472826
2017-03-07T09:14:16.182593+00:00应用程序[web.1]：WIT有话要说：2017-03-07 13:00:00拉各斯天气预报
2017-03-07T09:14:16.209388+00:00应用程序[web.1]：WIT有一个上下文：{u fbid_uu:'1781786975472826'，
2017-03-07T09:14:16.209390+00:00应用程序[网站1]：地点：“拉各斯”，
2017-03-07T09:14:16.209391+00:00应用程序[网站1]：日期：“2017-03-07 13:00:00”
2017-03-07T09:14:16.846188+00:00 heroku[web.1]：进程已退出，状态为1
2017-03-07T09:14:16.588543+00:00应用程序[web.1]：执行操作：获取预测
2017-03-07T09:14:16.717633+00:00应用程序[web.1]：/app/services/wit.js:149
2017-03-07T09:14:16.717635+00:00应用程序[web.1]：如果（日期===jsonData.list[i].dt_txt）{
2017-03-07T09:14:16.717636+00:00应用程序[网站1]：^
2017-03-07T09:14:16.717637+00:00应用程序[网站1]：
2017-03-07T09:14:16.717638+00:00应用程序[web.1]：类型错误：无法读取未定义的属性“dt_txt”
2017-03-07T09:14:16.717639+00:00应用程序[web.1]：应请求返回（/app/services/wit.js:149:32）
2017-03-07T09:14:16.717640+00:00应用程序[web.1]：at Request.self.callback（/app/node_modules/Request/Request.js:187:22）
201
$ heroku logs
2017-03-07T08:56:53.964138+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=81819d8f-9fc2-4d72-b3a2-b7fde4930417 fwd="31.13.113.64" dyno= connect= service= status=503 bytes=
2017-03-07T08:58:07.116769+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=9df360fb-9b55-4ab2-a67b-8d666b1d6db7 fwd="31.13.102.107" dyno= connect= service= status=503 bytes=
2017-03-07T08:59:21.085472+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=0742553f-e506-491c-80e4-1539e1decf4c fwd="31.13.114.78" dyno= connect= service= status=503 bytes=
2017-03-07T09:00:40.538513+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=717d0506-c098-49fa-921e-125fe7286a04 fwd="31.13.113.176" dyno= connect= service= status=503 bytes=
2017-03-07T09:01:56.032586+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=93ba9709-a374-4532-8e73-b41b6216e406 fwd="31.13.113.84" dyno= connect= service= status=503 bytes=
2017-03-07T09:03:17.015196+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=d2afcdbb-e079-4e81-8a4f-6bba3f831fde fwd="31.13.110.97" dyno= connect= service= status=503 bytes=
2017-03-07T09:04:40.339415+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=a1d0f243-7afc-4f19-9378-e916d1651a09 fwd="31.13.102.125" dyno= connect= service= status=503 bytes=
2017-03-07T09:06:02.989125+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=224b6a85-6607-4cb1-b294-764b9f36252a fwd="31.13.113.90" dyno= connect= service= status=503 bytes=
2017-03-07T09:07:29.479672+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=350e5974-741a-476a-b59b-cfd7c455bdf7 fwd="31.13.102.102" dyno= connect= service= status=503 bytes=
2017-03-07T09:08:45.760868+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=4b8194fb-85a6-4595-a680-1c17f5af5bf7 fwd="31.13.110.126" dyno= connect= service= status=503 bytes=
2017-03-07T09:10:09.100216+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=9cad0806-1c4f-45c7-a617-15ecc80201e7 fwd="31.13.114.78" dyno= connect= service= status=503 bytes=
2017-03-07T09:11:28.519846+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=5df0438d-8bf5-4db2-bf88-2293e7e8fa81 fwd="31.13.102.110" dyno= connect= service= status=503 bytes=
2017-03-07T09:12:54.962281+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=b352a060-d6ae-4612-ad32-a1c88836ce79 fwd="31.13.102.127" dyno= connect= service= status=503 bytes=
2017-03-07T09:13:03.133808+00:00 heroku[web.1]: State changed from crashed to starting
2017-03-07T09:13:04.529654+00:00 heroku[web.1]: Starting process with command `node index.js`
2017-03-07T09:13:06.597891+00:00 app[web.1]: GRABBING WIT
2017-03-07T09:13:06.637063+00:00 app[web.1]: Running on port 35231
2017-03-07T09:13:08.215961+00:00 heroku[web.1]: State changed from starting to up
2017-03-07T09:14:15.236302+00:00 heroku[router]: at=info method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=9a7d82c7-abb5-44c8-9e94-7f98e32cff1b fwd="31.13.110.99" dyno=web.1 connect=1ms service=90ms status=200 bytes=201
2017-03-07T09:14:15.769291+00:00 app[web.1]: Executing merge action
2017-03-07T09:14:16.181301+00:00 app[web.1]: Executing say with message: 2017-03-07 13:00:00 lagos weather forecast 
2017-03-07T09:14:16.182548+00:00 app[web.1]: WIT WANTS TO TALK TO: 1781786975472826
2017-03-07T09:14:16.182593+00:00 app[web.1]: WIT HAS SOMETHING TO SAY: 2017-03-07 13:00:00 lagos weather forecast 
2017-03-07T09:14:16.209388+00:00 app[web.1]: WIT HAS A CONTEXT: { _fbid_: '1781786975472826',
2017-03-07T09:14:16.209390+00:00 app[web.1]:   locat: 'lagos',
2017-03-07T09:14:16.209391+00:00 app[web.1]:   dat: '2017-03-07 13:00:00' }
2017-03-07T09:14:16.846188+00:00 heroku[web.1]: Process exited with status 1
2017-03-07T09:14:16.588543+00:00 app[web.1]: Executing action: fetch-forecast
2017-03-07T09:14:16.717633+00:00 app[web.1]: /app/services/wit.js:149
2017-03-07T09:14:16.717635+00:00 app[web.1]:   if (date === jsonData.list[i].dt_txt) {
2017-03-07T09:14:16.717636+00:00 app[web.1]:                                ^
2017-03-07T09:14:16.717637+00:00 app[web.1]: 
2017-03-07T09:14:16.717638+00:00 app[web.1]: TypeError: Cannot read property 'dt_txt' of undefined
2017-03-07T09:14:16.717639+00:00 app[web.1]:     at Request._callback (/app/services/wit.js:149:32)
2017-03-07T09:14:16.717640+00:00 app[web.1]:     at Request.self.callback (/app/node_modules/request/request.js:187:22)
2017-03-07T09:14:16.717640+00:00 app[web.1]:     at emitTwo (events.js:87:13)
2017-03-07T09:14:16.717641+00:00 app[web.1]:     at Request.emit (events.js:172:7)
2017-03-07T09:14:16.717642+00:00 app[web.1]:     at Request.<anonymous> (/app/node_modules/request/request.js:1126:10)
2017-03-07T09:14:16.717642+00:00 app[web.1]:     at emitOne (events.js:77:13)
2017-03-07T09:14:16.717643+00:00 app[web.1]:     at Request.emit (events.js:169:7)
2017-03-07T09:14:16.717644+00:00 app[web.1]:     at IncomingMessage.<anonymous> (/app/node_modules/request/request.js:1046:12)
2017-03-07T09:14:16.717645+00:00 app[web.1]:     at IncomingMessage.g (events.js:260:16)
2017-03-07T09:14:16.717646+00:00 app[web.1]:     at emitNone (events.js:72:20)
2017-03-07T09:14:16.863152+00:00 heroku[web.1]: State changed from up to crashed
2017-03-07T09:23:59.284086+00:00 heroku[web.1]: State changed from crashed to starting
2017-03-07T09:24:01.580046+00:00 heroku[web.1]: Starting process with command `node index.js`
2017-03-07T09:24:05.809576+00:00 app[web.1]: GRABBING WIT
2017-03-07T09:24:05.924459+00:00 app[web.1]: Running on port 28392
2017-03-07T09:24:05.968782+00:00 heroku[web.1]: State changed from starting to up
2017-03-07T10:00:03.549825+00:00 heroku[web.1]: Idling
2017-03-07T10:00:03.550345+00:00 heroku[web.1]: State changed from up to down
2017-03-07T10:00:04.361633+00:00 heroku[web.1]: Stopping all processes with SIGTERM
2017-03-07T10:00:04.498563+00:00 heroku[web.1]: Process exited with status 143
2017-03-07T12:01:51.673073+00:00 heroku[web.1]: Unidling
2017-03-07T12:01:51.673414+00:00 heroku[web.1]: State changed from down to starting
2017-03-07T12:01:53.676870+00:00 heroku[web.1]: Starting process with command `node index.js`
2017-03-07T12:01:56.290230+00:00 app[web.1]: Running on port 43074
2017-03-07T12:01:56.249464+00:00 app[web.1]: GRABBING WIT
2017-03-07T12:01:57.315203+00:00 heroku[web.1]: State changed from starting to up
2017-03-07T12:01:57.765390+00:00 heroku[router]: at=info method=HEAD path="/" host=safe-temple-90677.herokuapp.com request_id=f2adc9b9-dd93-4305-8a86-f3c5be7e2cde fwd="54.198.194.21" dyno=web.1 connect=1ms service=20ms status=200 bytes=200
2017-03-07T12:37:37.068030+00:00 heroku[web.1]: Idling
2017-03-07T12:37:37.068503+00:00 heroku[web.1]: State changed from up to down
2017-03-07T12:37:37.887286+00:00 heroku[web.1]: Stopping all processes with SIGTERM
2017-03-07T12:37:38.030801+00:00 heroku[web.1]: Process exited with status 143
2017-03-07T15:17:29.700320+00:00 heroku[web.1]: Unidling
2017-03-07T15:17:29.700704+00:00 heroku[web.1]: State changed from down to starting
2017-03-07T15:17:31.201586+00:00 heroku[web.1]: Starting process with command `node index.js`
2017-03-07T15:17:33.502602+00:00 app[web.1]: GRABBING WIT
2017-03-07T15:17:33.544722+00:00 app[web.1]: Running on port 34866
2017-03-07T15:17:34.828307+00:00 heroku[web.1]: State changed from starting to up
2017-03-07T15:17:35.879110+00:00 heroku[router]: at=info method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=a9cd91d8-0c3f-49e2-8366-18b3f42faa0c fwd="31.13.114.69" dyno=web.1 connect=1ms service=42ms status=200 bytes=201
2017-03-07T15:17:36.515555+00:00 heroku[router]: at=info method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=ab1dee01-5289-49a7-94b2-0ed3f70b85ef fwd="31.13.113.67" dyno=web.1 connect=1ms service=18ms status=200 bytes=201
2017-03-07T15:17:37.620224+00:00 app[web.1]: Executing merge action
2017-03-07T15:17:38.050442+00:00 app[web.1]: Executing say with message: Getting you the weather for today at rome
2017-03-07T15:17:38.051244+00:00 app[web.1]: WIT WANTS TO TALK TO: 1781786975472826
2017-03-07T15:17:38.051288+00:00 app[web.1]: WIT HAS SOMETHING TO SAY: Getting you the weather for today at rome
2017-03-07T15:17:38.068401+00:00 app[web.1]: WIT HAS A CONTEXT: { _fbid_: '1781786975472826', locat: 'rome', missingDat: true }
2017-03-07T15:17:38.849856+00:00 app[web.1]: Executing action: fetch-weather
2017-03-07T15:17:39.655894+00:00 heroku[router]: at=info method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=7bbe3d86-da8c-4c53-b0c9-e45e0b80c889 fwd="31.13.114.80" dyno=web.1 connect=1ms service=4ms status=200 bytes=201
2017-03-07T15:17:39.704790+00:00 app[web.1]: Executing say with message: overcast clouds in rome
2017-03-07T15:17:39.705032+00:00 app[web.1]: WIT WANTS TO TALK TO: 1781786975472826
2017-03-07T15:17:39.705110+00:00 app[web.1]: WIT HAS SOMETHING TO SAY: overcast clouds in rome
2017-03-07T15:17:39.705684+00:00 app[web.1]: WIT HAS A CONTEXT: { _fbid_: '1781786975472826', forecast: 'overcast clouds' }
2017-03-07T15:17:40.113984+00:00 app[web.1]: Waiting for further messages
2017-03-07T15:17:46.513047+00:00 heroku[router]: at=info method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=2a9d56bc-0347-49b3-988b-0c9240cec5f9 fwd="31.13.113.94" dyno=web.1 connect=0ms service=1ms status=200 bytes=201
2017-03-07T15:18:40.398203+00:00 heroku[router]: at=info method=POST path="/webhooks" host=safe-temple-90677.herokuapp.com request_id=5f8cf61e-524c-46ec-acef-c2086bebe338 fwd="31.13.102.126" dyno=web.1 connect=0ms service=6ms status=200 bytes=201
2017-03-07T15:18:41.311907+00:00 app[web.1]: Executing merge action
2017-03-07T15:18:41.546198+00:00 app[web.1]: Executing action: fetch-weather
2017-03-07T15:18:51.556434+00:00 app[web.1]: [warn] I didn't get the callback after 10 seconds. Did you forget to call me back?
2017-03-07T15:54:28.273144+00:00 heroku[web.1]: Idling
2017-03-07T15:54:28.273744+00:00 heroku[web.1]: State changed from up to down
2017-03-07T15:54:28.903317+00:00 heroku[web.1]: Stopping all processes with SIGTERM
2017-03-07T15:54:29.068913+00:00 heroku[web.1]: Process exited with status 143
2017-03-07T16:05:09.174635+00:00 heroku[web.1]: Unidling
2017-03-07T16:05:09.176009+00:00 heroku[web.1]: State changed from down to starting
2017-03-07T16:05:10.949690+00:00 heroku[web.1]: Starting process with command `node index.js`
2017-03-07T16:05:13.145210+00:00 app[web.1]: GRABBING WIT
2017-03-07T16:05:13.185095+00:00 app[web.1]: Running on port 34415
2017-03-07T16:05:13.650386+00:00 heroku[web.1]: State changed from starting to up
2017-03-07T16:05:14.263374+00:00 heroku[router]: at=info method=GET path="/" host=safe-temple-90677.herokuapp.com request_id=3e560b4e-afb7-455f-aad5-c39f087cd643 fwd="197.211.63.112" dyno=web.1 connect=1ms service=18ms status=304 bytes=150
2017-03-07T16:05:16.130712+00:00 heroku[router]: at=info method=GET path="/favicon.ico" host=safe-temple-90677.herokuapp.com request_id=2f675cd7-07f8-4a7b-baf9-f40ffb68951a fwd="197.211.63.112" dyno=web.1 connect=1ms service=7ms status=404 bytes=386

2017-03-07T09:14:16.588543+00:00 app[web.1]: Executing action: fetch-forecast
2017-03-07T09:14:16.717633+00:00 app[web.1]: /app/services/wit.js:149
2017-03-07T09:14:16.717635+00:00 app[web.1]:   if (date === jsonData.list[i].dt_txt) {
2017-03-07T09:14:16.717636+00:00 app[web.1]:                                ^
2017-03-07T09:14:16.717637+00:00 app[web.1]: 
2017-03-07T09:14:16.717638+00:00 app[web.1]: TypeError: Cannot read property 'dt_txt' of undefined
2017-03-07T09:14:16.717639+00:00 app[web.1]:     at Request._callback (/app/services/wit.js:149:32)
2017-03-07T09:14:16.717640+00:00 app[web.1]:     at Request.self.callback (/app/node_modules/request/request.js:187:22)
2017-03-07T09:14:16.717640+00:00 app[web.1]:     at emitTwo (events.js:87:13)
2017-03-07T09:14:16.717641+00:00 app[web.1]:     at Request.emit (events.js:172:7)
2017-03-07T09:14:16.717642+00:00 app[web.1]:     at Request.<anonymous> (/app/node_modules/request/request.js:1126:10)
2017-03-07T09:14:16.717642+00:00 app[web.1]:     at emitOne (events.js:77:13)
2017-03-07T09:14:16.717643+00:00 app[web.1]:     at Request.emit (events.js:169:7)
2017-03-07T09:14:16.717644+00:00 app[web.1]:     at IncomingMessage.<anonymous> (/app/node_modules/request/request.js:1046:12)
2017-03-07T09:14:16.717645+00:00 app[web.1]:     at IncomingMessage.g (events.js:260:16)
2017-03-07T09:14:16.717646+00:00 app[web.1]:     at emitNone (events.js:72:20)
2017-03-07T09:14:16.863152+00:00 heroku[web.1]: State changed from up to crashed