the node is not synced v0.8.3

[starowner777]

Describe the bug
I am building a self-node while looking at this site.
https://testnet.iohkdev.io/en/cardano/shelley/get-started/setting-up-a-self-node/
The self-node appears to be out of sync.

Mandatory Information

1. jcli rest v0 node stats get --host "http://127.0.0.1:8443/api

$ jcli rest v0 node stats get --host "http://127.0.0.1:8443/api "
failed to make a REST request
|-> could not connect with node
|-> http://127.0.0.1:8443/api/v0/node/stats: error trying to connect: Connection refused (os > error 111)
|-> Connection refused (os error 111)

2. cat config.yaml

$ cat config.yaml
storage: "/home/ec2-user/self_node/jormungandr-storage-test/"
rest:
listen: "127.0.0.1:8443"

p2p:
trusted_peers: []
public_address: "/ip4/127.0.0.1/tcp/8299"
topics_of_interest:
messages: low
blocks: normal

Additional context
My serever
└Amazonlinux

jormungandr
└v0.8.3

Error title
└ Connection refused (os error 111)

What should I do to synchronize?