Exception ticking world

[RICE0707]

There is no indication that points to Residence, so I’m not certain whether the issue is caused by it.
However, this random crash problem only started happening after I updated Residence and CMILib:

CMILib 1.5.7.1 → 1.5.7.5
Residence 6.0.1.0 → 6.0.1.2

[13:27:27] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.ReportedException: Exception ticking world
	at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1826) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServer.java:503) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1606) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1260) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:326) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.NullPointerException: Cannot invoke "it.unimi.dsi.fastutil.objects.ObjectArrayList.get(int)" because "this.wrapped" is null
	at it.unimi.dsi.fastutil.objects.ObjectOpenHashSet$SetIterator.next(ObjectOpenHashSet.java:575) ~[fastutil-8.5.12.jar:?]
	at net.minecraft.network.protocol.game.ClientboundUpdateAttributesPacket.<init>(ClientboundUpdateAttributesPacket.java:35) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at net.minecraft.server.level.ServerEntity.sendDirtyEntityData(ServerEntity.java:405) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at net.minecraft.server.level.ServerEntity.sendChanges(ServerEntity.java:230) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at net.minecraft.server.level.ChunkMap.processTrackQueue(ChunkMap.java:1174) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at net.minecraft.server.level.ChunkMap.tick(ChunkMap.java:1185) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at net.minecraft.server.level.ServerChunkCache.tick(ServerChunkCache.java:487) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at net.minecraft.server.level.ServerLevel.tick(ServerLevel.java:895) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1815) ~[misteln-1.20.6.jar:1.20.6-DEV-f49f2ab]
	... 5 more

Time: 2025-12-09 13:27:27
Description: Exception ticking world

java.lang.NullPointerException: Cannot invoke "it.unimi.dsi.fastutil.objects.ObjectArrayList.get(int)" because "this.wrapped" is null
	at it.unimi.dsi.fastutil.objects.ObjectOpenHashSet$SetIterator.next(ObjectOpenHashSet.java:575)
	at net.minecraft.network.protocol.game.ClientboundUpdateAttributesPacket.<init>(ClientboundUpdateAttributesPacket.java:35)
	at net.minecraft.server.level.ServerEntity.sendDirtyEntityData(ServerEntity.java:405)
	at net.minecraft.server.level.ServerEntity.sendChanges(ServerEntity.java:230)
	at net.minecraft.server.level.ChunkMap.processTrackQueue(ChunkMap.java:1174)
	at net.minecraft.server.level.ChunkMap.tick(ChunkMap.java:1185)
	at net.minecraft.server.level.ServerChunkCache.tick(ServerChunkCache.java:487)
	at net.minecraft.server.level.ServerLevel.tick(ServerLevel.java:895)
	at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1815)
	at net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServer.java:503)
	at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1606)
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1260)
	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:326)
	at java.base/java.lang.Thread.run(Thread.java:1583)

[RICE0707]

After I downgraded Residence back to 6.0.1.0, everything returned to normal.
I suspect that even though Residence itself does not directly use fastutil, some of the plugins it interacts with do.

The plugins on my server that directly or indirectly use fastutil include:

bluemap-5.11-paper.jar
ProtocolLib-5.3.0.jar
InteractiveChatDiscordSrvAddon-4.3.4.0.jar
naturerevive-spigot-2.1.1-shaded.jar
Skript-2.9.5.jar
PoaSK.jar
LibsDisguises-11.0.7-Premium.jar
ViaBackwards-5.5.1.jar
FastAsyncWorldEdit-Paper-2.14.1.jar
FancyHolograms-2.3.3.108.jar
Minepacks.jar
ViaVersion-5.5.1.jar
QuickShop-Hikari-6.2.0.11-SNAPSHOT-7.jar

This information may help in identifying potential fixes.

[RICE0707]

Among these, FastAsyncWorldEdit does have an issue report related to this error, but in my server environment it does not cause any problems, and Residence should not be interacting with FastAsyncWorldEdit at all.
As for naturerevive, it is our custom plugin. The only part that uses fastutil is the loot-chest replacement logic, which has no interaction with Residence.

My personal intuition is that something went wrong in the interaction between Residence and either bluemap, causing bluemap to misuse fastutil — but this is only a guess.

In addition, I noticed that this fastutil crash only occurs after a player uses a teleport command (not necessarily a Residence command).
Perhaps it happens when a player uses any teleport command into a Residence area? That might also be a direction to investigate, but I have been unable to reproduce it.

[Sh3r1ffCZ]

crash-2025-12-12_19.25.56-server.txt
crash-2025-12-12_20.26.08-server.txt
crash-2025-12-14_14.49.51-server.txt
crash-2025-12-14_17.21.01-server.txt
crash-2025-12-14_18.09.46-server.txt
crash-2025-12-14_20.05.09-server.txt

Hello, I’ve been dealing with a similar problem for a few days as well. I tried downgrading some plugins and even using their dev/snapshot versions, but without success. I also tried to find out what triggers it by teleporting around in various ways, but the problem occurred only very rarely. Each time, the crash log contained a different player nickname, and each time it was a different world or set of coordinates. A few times it even happened in a location that was really far beyond the world border.

I also tried Purpur, Paper, and Pufferfish.

The issue occurred with players using our resource pack as well as with newcomers who truly had nothing, often not even a residence.

Players could be on different versions (1.21.8, 1.21.10, 1.21.11), and the crash still occurred because of them.

All plugins are up to date and on the latest versions.

[mercurialmusic]

I had initially opened the same issue on CMI since I had updated that and Residence at the same time, but I think I've erroneously blamed CMI because it seemed to happen when CMI teleport commands were used. I've since downgraded Residence to 6.0.1.1 and haven't had a crash yet (fingers crossed).

Honestly my trust in this plugin has started to slip lately. Updates have felt a bit "fast and loose", with abrupt changes to the way things have worked and it's getting frustrating. Definitely not up to the standards I have relied on for years with your plugins.

[mercurialmusic]

2+ weeks after downgrading Residence to 6.0.1.1 I have not had a single crash.

[qwejerrywolf]

2+ weeks after downgrading Residence to 6.0.1.1 I have not had a single crash.

Thank you very much, mate! Your information provided critical solution for my recent weird server crashes, you're a legend.