"npm run nxt" on Ubuntu 18.04LTS wont run properly

[Casper0513]

Ubuntu 18.04LTS
Node: v13.2.0
Java: 11

Initializing Nxt server version 1.11.13
javafx not supported
isHeadless=false
Runtime mode nxt.env.CommandLineMode
User home folder /home/casper/Proof-of-Stake-Cryptocurrency-generator/nxt
Loading nxt-default.properties from classpath
Exception in thread "main" java.lang.ExceptionInInitializerError
Caused by: java.lang.RuntimeException: Using an nxt-default.properties file from a version other than 1.11.13 is not supported!!!
at nxt.Nxt.(Nxt.java:80)

[sandoche]

Is Java well installed ?

[Casper0513]

yes it is I actually got my own Blockchain created but the thing is How do I upload it to Github properly so that I can run it in DigitalOcean droplet Properly????? Help would be great thanks

[sandoche]

There are some info here:
https://github.com/sandoche/Proof-of-Stake-Cryptocurrency-generator#step-4---host-your-nodes-in-some-servers

Also you need to make sure to open the right ports.