For those getting the EOF error, check to make sure you don't have any single or double quotes in your server name. For example: Mike's Hytale Server I found a closed issue about this in the GitHub repo while searching for some other answers. The latest update from this morning is working for me so far.
Goobaroo, I actually installed Unraid because of these Minecraft server packages you've made. Great work. Kids have been playing ATM9 and having fun. Any chance of putting together an ATM9 No Frills version?