Minecraft Version

1.20.x

Version

1.109.5

Details

Internal Exception: java.lang.RunstimeException: Error while handling packet "computercraft:upgrades_loaded": Index 103 out of bounds for length 3

I can get into singleplay just fine, my friends can join me using hamachi, essentials, minetogether but when I host an actual fabric server everyone attempting to join receives this error. I have been trying to figure out if this is mod incompatibility or something wierd with my computer, but I keep getting this error and I do not have another machine to test it on, I have attempted to reinstall java and make a clean instance of minecraft and my server but I keep getting this error.
latest.log
server latest.log

Thanks for the report! I'm afraid I can't reproduce this with just CC: Tweaked at all (with Fabric loader 0.15.3 and fabric-api 0.91.0+1.20.1).

Looking at your logs, there's 29 turtle upgrades being loaded, so I'm assuming you've either got a datapack or another add-on mod adding them? It might be worth removing that and trying again, to see if it helps.

I found the issue to be one of my create add-ons modified something in the server files that only became an issue when cc craft was installed on a server. I was struggling to debug what mod was at fault because it remained even after the removal of the mod.