Possible Fixes

Yes

Modpack Version

other

What happened?

After few days of continuous playing, the game stopped loading the world and it crashes on startup
Been playing with optifine, after it started crashing i removed optifine and tried to load it few more times, but the result is the same. Also tried to update mods and to give more ram memory, the problem still consists.

Version of modpack: 2.2.7 (latest), started playing few days ago. Of course i can rollback to a backup to see if it fixes the problem with loading, but I'm not sure if it is a right way to solve the problem.

Crash Log

https://gist.github.com/JunoMeow/afaa07120987f007f519a496216c3ecc

Having similar problem with a single player world when open to LAN. Version 2.2.7 installed from CurseForge.

First, a player gets kicked with "internal server error" and then when trying to get back in, it gets stuck on "Loading terrain" which then kicks the player off again with the same "internal server error".

This has happened more than once and we had to go back to a previous backup. Each time it seems Enderman were involved either from the End Dimension or because of an Enderman spawner. The spawner was originally a Minecraft spawner which was modified to an Apotheosis spawner with multiple items (sugar, clocks, etc)

The first time it happened as I was afking by the spawner and there were probably 30+ Enderman in the room. The second time I had just used a waystone to get to our Enderman farm, killed a few and it booted me mid-kill. The first time I was using an iron sword with multiple enchants (Vorpal, Frost Aspect, Life-Steal, Sharpness 4, etc) . The second time was a diamond sword with multiple enchants (Knowledge of the Ages 4, Leech 7, etc).

This only happens to people joining as multiplayer. The original creator of the game can still join the game, and anyone who wasn't kicked out, but whoever got booted can't re-join.

Update.