Server crash / timeout TogetherForever

[NLBlacky]

Bug Report

For an unknown reason, our server keeps going down once in a while caused by TogetherForever.
I made an issue report in their github but wanted to report it here as well.

The issue report can be found here: Buuz135/Together-Forever#22

Expected Behaviour

I expect the server to stay up and not close like it does now. Even having it go into a proper
crash so it can auto restart would be great.

Possible Solution

I think that removing the mod might be a possible fix, but if it is only Sponge having this issue
I can understand that it is not an option for others.

Steps to Reproduce (for bugs)

I haven't found a way to reproduce it. So far it has only been the player in the log and no-one else.
The server crash / timeout isn't instant when he joins.

Logs

There were no crash logs. I do have this from our server log. It was spammed alot of times which
made the server log 11 mb. I can still upload the log if you wish, but the usual ways didn't work.

• Client/Server Log: https://pastebin.com/mS5AY5Kk
• Crash Log: None

World Information

• Preset: {"Topography-Preset":"Sky Factory 4"}
• Prestige: Off
• Modpack Version world created in: 4.0.0
• Additional Content Installed: Sponge

Client Information

• Modpack Version: 4.0.3
• Java Version: java: 1.8.0.51 (64 bit)
• Launcher Used: Twitch
• Memory Allocated: 6144 mb
• Server/LAN/Single Player: Server
• Optifine Installed: No
• Shaders Enabled: No

Server Information

• Java Version: Java 8 (Can't provide more information atm but can add more later if needed)
• Operating System: Ubuntu (Can't provide more information atm but can add more later if needed)
• Hoster/Hosting Solution: Hetzner
• Sponge (Non-Vanilla Forge) Server: Yes, tried version 3616, 3679 and 3680.

[KorewaLidesu]

Steps to Reproduce (for bugs):
Do somethings to get advancement. When you take the item from crafting/getting it, it will trigger the sync and get conflict with Sponge Advancement trigger system which.......
cause the kick and take the world before you craft/get the things for Advancement.

More simple, if you try to get Advancement (after twice time), the server will crash itself.

[KorewaLidesu]

If you want to get Advancement system going, there are 2 ways to do:
1: you just use kick or leave the team before do Advancement.
2: disable Together Forever or Sponge if you are Admin/Owner of the server/

[ParkerMc]

Try with the newest version of sponge forge 1.12.2-2825-7.1.6-RC3705 they fixed many advancement bugs recently.

[ParkerMc]

Also probably related to SpongePowered/SpongeForge#2688