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The server crashed when a player who was sitting on a chair on a sable structure logged onto the server. #2149

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The server crashed when a player who was sitting on a chair on a sable structure logged onto the server.#2149
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Status: TriageDefault label, waiting for triage and check
@lxkochevnikxl

Description

@lxkochevnikxl
lxkochevnikxl
opened on May 28, 2026

I have tried that...

  • I am using the latest Arclight build

  • I have read the FAQ and Troubleshooting, they didn't solve my issue

  • I have searched existing Issues and found no duplicates

  • The mods and/or plugins I use support my Minecraft version

  • I have installed all required dependencies for the mods and/or plugins

  • I have updated all mods and/or plugins to their latest versions

  • This issue cannot be reproduced on a Spigot server
    (Mod-related issues are considered non-reproducible on Spigot)

  • This issue cannot be reproduced on the Mod Loader server (Forge/NeoForge/Fabric)
    (Plugin-related issues are considered non-reproducible on mod loaders)

Minecraft Version

1.21.1

Arclight Version

arclight-neoforge-1.21.1-1.0.2-SNAPSHOT-6eabd5d

OS Version

win 11

Java Version

Eclipse Adoptium\jdk-21.0.10.7-hotspot

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                aero_copycats 1.1.0 (aerocopycats)
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                Amendments 1.21-2.0.15 (amendments)
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                Create Aeronautics 1.2.1 (aeronautics_bundled)
                Create Aeronautics 1.2.1 (aeronautics)
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                Create Big Cannons: Equally Opposite 0.1.1 (cbc_equally_opposite)
                Create Big Cannons: Going Ballistic 0.1.3 (cbc_going_ballistic)
                Create Bits 'n' Bobs 0.0.44 (bits_n_bobs)
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                XaeroLib 1.1.15 (xaerolib)

Issue Description

A player sitting in a chair on a sable structure has left the game, and now when this player logs into the server, it crashes with an error. The player reports that upon logging into the server, they find themselves at billionth coordinates, after which the server crashes with an error.

[15:40:39 ERROR]: Encountered an unexpected exception
net.minecraft.ReportedException: Exception ticking world
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.MinecraftServer.tickChildren(MinecraftServerMixin_NeoForge.java:1041) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServerMixin_NeoForge.java:317) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.MinecraftServer.tickServer(MinecraftServerMixin_NeoForge.java:917) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.MinecraftServer.runServer(MinecraftServerMixin_NeoForge.java:707) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServerMixin_NeoForge.java:267) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]
Caused by: java.lang.UnsupportedOperationException: Cannot change blocks in nonexistent plot holder
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.level.ServerChunkCache.handler$ekj000$sable$blockChanged(ServerChunkCacheMixin.java:3715) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.level.ServerChunkCache.blockChanged(ServerChunkCacheMixin.java) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.level.ServerLevel.sendBlockUpdated(ServerLevelMixin.java:1071) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/arclight@1.0.2-SNAPSHOT+6eabd5d/org.bukkit.craftbukkit.v1_21_R1.block.CraftBlockState.update(CraftBlockStateMixin.java:228) ~[arclight-1.21.1-1.0.2-SNAPSHOT-6eabd5d.jar%23317!/:arclight-neoforge-1.21.1-1.0.2-SNAPSHOT+6eabd5d]
at TRANSFORMER/arclight@1.0.2-SNAPSHOT+6eabd5d/org.bukkit.craftbukkit.v1_21_R1.block.CraftBlockState.update(CraftBlockStateMixin.java:208) ~[arclight-1.21.1-1.0.2-SNAPSHOT-6eabd5d.jar%23317!/:arclight-neoforge-1.21.1-1.0.2-SNAPSHOT+6eabd5d]
at TRANSFORMER/arclight@1.0.2-SNAPSHOT+6eabd5d/org.bukkit.craftbukkit.v1_21_R1.event.CraftEventFactory.handleBlockSpreadEvent(CraftEventFactoryMixin.java:2140) ~[arclight-1.21.1-1.0.2-SNAPSHOT-6eabd5d.jar%23317!/:arclight-neoforge-1.21.1-1.0.2-SNAPSHOT+6eabd5d]
at TRANSFORMER/arclight@1.0.2-SNAPSHOT+6eabd5d/org.bukkit.craftbukkit.v1_21_R1.event.CraftEventFactory.handleBlockSpreadEvent(CraftEventFactoryMixin.java:888) ~[arclight-1.21.1-1.0.2-SNAPSHOT-6eabd5d.jar%23317!/:arclight-neoforge-1.21.1-1.0.2-SNAPSHOT+6eabd5d]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.world.level.block.BuddingAmethystBlock.redirect$gfe000$arclight$blockSpread(BuddingAmethystBlockMixin.java:517) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.world.level.block.BuddingAmethystBlock.randomTick(BuddingAmethystBlockMixin.java:52) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.world.level.block.state.BlockBehaviour$BlockStateBase.randomTick(BlockBehaviour_BlockStateBaseMixin.java:736) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.level.ServerLevel.redirect$chi000$lithium$redirectBlockStateTick(ServerLevelMixin.java:6184) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.level.ServerLevel.tickChunk(ServerLevelMixin.java:529) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.level.ServerChunkCache.tickChunks(ServerChunkCacheMixin.java:371) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.level.ServerChunkCache.tick(ServerChunkCacheMixin.java:321) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.level.ServerLevel.tick(ServerLevelMixin.java:379) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.MinecraftServer.tickChildren(MinecraftServerMixin_NeoForge.java:1037) ~[server-1.21.1-20240808.144430-srg.jar%23315!/:?]
... 5 more
[15:40:39 FATAL] [n.n.n.c.NeoForgeMod]: Preparing crash report with UUID bb30b898-a889-41bb-bc55-06d7baef4d59
[15:40:40 ERROR]: This crash report has been saved to: c:\Users\IGRAUND\Desktop\Neoforge Igraund server\server aero test\crash-reports\crash-2026-05-28_15.40.39-server.txt

Steps to Reproduce

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Server Logs

https://mclo.gs/F1igLBh

The Server Pack for Reproduce

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