Ok, so I have removed all the flags and all the mods. I also shut down the upstream velocity proxy, in case it was an issue with polling the server or something. Even running by itself the consoled gets completely spammed by messages. I know that these are not errors in themselves, but spamming the console just makes catching any real errors or relevant warnings that much more difficult. As a side issue, I’m using puffer panel to manage all the worlds and installs and the spam to the console makes the admin panel unresponsive. I have no idea where to trouble shoot next.

Yes, we already had that in place. The storage is in FreeNAS and we have snapshots every half an hour. We’ve already had to use the backups because after a paper update the whitelist turned itself off and when we logged in there were 3 random persons basically destroying everything. Btw, tangent, you find an open server and your first instinct is to just start tearing everything down? Why? Anyway, we just restored to the previous snapshot and it was back to normal. Zfs snapshots are great.

Oh, and in case it’s relevant, I’m running the jvm with these flags (I just copied over the flags I had on my paper server): -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:InitiatingHeapOccupancyPercent=15 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1 -Dusing.aikars.flags=https://mcflags.emc.gs/ -Daikars.new.flags=true

This is a 1.21.4 server.

Hey! thanks for the offer. I’ve pasted the output here: https://pastebin.com/X7Wfw9JU (this is just a fragment; the server has been on for a couple of hours and I could paste a Mb of text easily. It is very verbose)

These are the mods installed I have installed:

• fabric-api
• instantgroup
• voicechat
• worldedit
• tick-stasis
• lithium
• krypton
• cloth-config
• spark
• ferritecore
• viewdistancefix
• FabricProxy-Lite

I don’t know if this will help, but I had to resolder the cables to the bed of an old printer and the iron I had just couldn’t put out enough heat; the bed sank it all. I put it in the oven for a while, so that it was pre-warmed and the iron could melt the solder.

Probably using the kitchen oven where I cook wasn’t a very good idea, but hey, I’m still alive.