the xunfeng is not stable and always need to re-login

[GGOOHAPPY]

i used the one click installation ,
when it during the installation , it shows on exception , not sure if it is the root cause why the xunfeng is not stable .

Initialized XunFeng Database...
exception: connect failed
Wait xunfeng_db startup...
bye
MongoDB shell version v3.4.0
connecting to: mongodb://127.0.0.1:65521/xunfeng
MongoDB server version: 3.4.0
switched to db xunfeng
Successfully added user: {
"user" : "xxx",
"roles" : [
{
"role" : "dbOwner",
"db" : "xunfeng"
}
]
}