silent jungle
asked chatgpt because it helped me with reading logs and it said this:
Yep! The server crash is happening because of a NullPointerException caused by a mob (probably a villager) trying to run an AI task, but one of its internal values was null when it shouldn't be.
Here's the key error from the log:
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Caused by: java.lang.NullPointerException: Cannot invoke "net.minecraft.class_4135.method_19056()" because "$$4" is null
This means the game tried to run some AI logic (GoalSelector.tick) for an entity, but something was missing (likely an attribute, goal, or pathing data).
Likely Causes:
Corrupted or invalid entity: A mob (like a Villager) might've spawned with broken or missing data.
Mod conflict: Based on the mods loaded (Cobblemon, Ice and Fire, Death Knights, etc.), one of the mods may have added or altered mob AI in a way that breaks under certain conditions.
Missing Attribute IDs:
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Attribute ID 'death_knights:unholy' does not belong to a known attribute.
Attribute ID 'death_knights:blood' does not belong to a known attribute.
This tells us the mod is trying to use attributes that don't exist or aren't registered — a strong hint that Death Knights mod is involved in the crash.
How to Fix It:
✅ Option 1: Identify and Remove the Broken Entity
Use NBTExplorer or Amulet Editor to:
Open your world save.
Go to the chunk near (663, 134, -205) — that's where the crash happened.
Delete the entity causing the issue (likely a Villager or custom mob).
✅ Option 2: Disable the Mod
If the crash always happens on server startup or as soon as someone logs in, try disabling the Death Knights mod or any mod recently added/updated.
✅ Option 3: Update or Patch Mods
Make sure:
All your mods are compatible with each other and your Minecraft version.
You're using the latest version of each mod, especially Death Knights, Cobblemon, and Ice and Fire.
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royal nest