I have the same error, but solved changing the IP in servers.txt
Find: 127.0.0.1 and change to
IP Lan, ex.:
192.168.0.10
[
{ type: "Login", id: 1, ip: "192.168.0.10", port: 2000 },
{ type: "Channel", id: 1, ip: "192.168.0.10", port: 7000, maps: "all" },
]