From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 18 Apr 2020 15:59:41 -0400
Subject: [PATCH] Don't crash if player is attempted to be removed from
untracked chunk.
I suspect it deals with teleporting as it uses players current x/y/z
diff --git a/src/main/java/net/minecraft/server/level/DistanceManager.java b/src/main/java/net/minecraft/server/level/DistanceManager.java
index c716047fefb51a77ce18df243c517d80c78b6853..0a926afa06a5e37cf2650afa1b5099a2a9ffa659 100644
--- a/src/main/java/net/minecraft/server/level/DistanceManager.java
+++ b/src/main/java/net/minecraft/server/level/DistanceManager.java
@@ -147,8 +147,8 @@ public abstract class DistanceManager {
ObjectSet<ServerPlayer> objectset = (ObjectSet) this.playersPerChunk.get(i);
if (objectset == null) return; // CraftBukkit - SPIGOT-6208
- objectset.remove(player);
- if (objectset.isEmpty()) {
+ if (objectset != null) objectset.remove(player); // Paper - some state corruption happens here, don't crash, clean up gracefully.
+ if (objectset == null || objectset.isEmpty()) { // Paper
this.playersPerChunk.remove(i);
this.naturalSpawnChunkCounter.update(i, Integer.MAX_VALUE, false);
//this.playerTicketManager.update(i, Integer.MAX_VALUE, false); // Paper - no longer used
