Parse Server Crash when user Login.

[rs5173]

Version : 2.7.1
System : Centos 7
SDK: android-1.15.8

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I use login method to do a password authentication ,The first time,it work,Then,Parse Server will Carsh when I use login method again,

but.....Parse Server is work always When I execute a command ‘node app.js &’in Xshell and don't close the command window,.if I close the command window Parse Server will Carsh when I use login method again,

In v2.6.5,it work always.

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my app.js：

var express = require('express');
var ParseServer = require('parse-server').ParseServer;
var app = express();

var api = new ParseServer({
  databaseURI: 'mongodb://admin:123456@localhost:27017/dict',
  cloud: '/root/parse-server/cloud/main.js',
  appId: '**********',
  masterKey: '************', 
  serverURL: 'http://localhost:1337/dict'
});

app.use('/dict', api);
app.listen(1337, function() {
  console.log('parse-server running on port 1337.');
});

[rs5173]

Parse Server will Carsh if usename/email dosen't exist or password is error，This is a bug?

[rs5173]

change command to 'nohup bash start.sh &',it work!