Hello,
I was basically doing a basic Integrated / OpenToLan test with MaLiLib and CarpetMod only under IntelliJ IDEA.

At first I thought it was related to something I was doing with MaLiLib under my Snapshot DEV branch, but the crash was not related to what I was doing, testing some network code Mixin Streamlining changes. It was a CarpetMod crash.

crash-2024-03-05_01.25.07-client.txt

CarpetMod is a common part of my Network Testing to verify the Hello Packet handler is working.

To me, the Crash appears to be related to the mod getting confused that it was an Integrated / OpenToLan Server instead of a dedicated Server, as the Mod works fine if I connect to a dedicated server running Carpet Mod.

Going to close this as a duplicate of #1908 to not have two issues for the same.

Can you still reproduce this?

What triggered the crash? Tried leaving from a LAN world and it's not triggering for me (in Carpet's env). May have been fixed since. Or does it happens with Carpet in a different dev env? (if so, run/mods or maven, and what mappings?)

This was a while ago, and only happened once, and I can't reproduce it thus far. I just wanted to report it, as something to keep an eye out for if the culprit is found down the road.

Loom mappings for malilib, and back under 24w09a was "probably" 1.6 yet.

It's fine if you just want to close it, if it's not reproducible.

I basically hosted a test game "Open to Lan" using Servux (No longer a thing since the network api changes), and was connecting another IDEA session to it, also using Carpet mod and MiniHUD as a client. It was network testing to see if the mods all played together nicely in that type of setup.

Seems to still be a thing, #1908.