From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Tue, 7 Nov 2023 18:59:04 -0800
Subject: [PATCH] Don't unpack loot table for TEs not in world

Fixed by 23w44a/1.20.3. Remove it then

diff --git a/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java
index 081691f9710ff1115e4308f79ed49fbc38941193..3e638f12956e57548f76c7e2403ba370f7baa249 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java
@@ -70,7 +70,7 @@ public abstract class RandomizableContainerBlockEntity extends BaseContainerBloc
     }
 
     public void unpackLootTable(@Nullable Player player) {
-        if (this.lootableData.shouldReplenish(player) && this.level.getServer() != null) { // Paper
+        if (this.level != null && this.lootableData.shouldReplenish(player) && this.level.getServer() != null) { // Paper - don't unpack loot table if not in world
             LootTable lootTable = this.level.getServer().getLootData().getLootTable(this.lootTable);
             if (player instanceof ServerPlayer) {
                 CriteriaTriggers.GENERATE_LOOT.trigger((ServerPlayer)player, this.lootTable);