서버열고 트리거로 만든명령어 치면 크래쉬뜨고 서버꺼지는데 이유알수있을까요? ㅠㅠ 

---- Minecraft Crash Report ----

// You're mean.

Time: 22. 9. 26 오후 11:33

Description: Exception ticking world

java.util.ConcurrentModificationException

    at java.util.HashMap$HashIterator.nextNode(Unknown Source)

    at java.util.HashMap$KeyIterator.next(Unknown Source)

    at net.minecraft.server.management.PlayerChunkMap.func_72693_b(PlayerChunkMap.java:123)

    at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:424)

    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:896)

    at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:472)

    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:779)

    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:633)

    at java.lang.Thread.run(Unknown Source)

A detailed walkthrough of the error, its code path and all known details is as follows:

---------------------------------------------------------------------------------------

-- Head --

Thread: Server thread

Stacktrace:

    at java.util.HashMap$HashIterator.nextNode(Unknown Source)

    at java.util.HashMap$KeyIterator.next(Unknown Source)

    at net.minecraft.server.management.PlayerChunkMap.func_72693_b(PlayerChunkMap.java:123)

    at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:424)

-- Affected level --

Details:

    Level name: world

    All players: 1 total; [EntityPlayerMP['TomSedy'/349, l='world', x=29927.86, y=85.32, z=29990.31](TomSedy at 29927.861340382344,85.31793994010025,29990.307316507886)]

    Chunk stats: ServerChunkCache: 625 Drop: 0

    Level seed: -5987776383364897271

    Level generator: ID 00 - default, ver 1. Features enabled: true

    Level generator options: 

    Level spawn location: World: (29930,64,30006), Chunk: (at 10,4,6 in 1870,1875; contains blocks 29920,0,30000 to 29935,255,30015), Region: (58,58; contains chunks 1856,1856 to 1887,1887, blocks 29696,0,29696 to 30207,255,30207)

    Level time: 1142274 game time, 6147 day time

    Level dimension: 0

    Level storage version: 0x04ABD - Anvil

    Level weather: Rain time: 1 (now: false), thunder time: 1 (now: false)

    Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false

Stacktrace:

    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:896)

    at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:472)

    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:779)

    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:633)

    at java.lang.Thread.run(Unknown Source)

-- System Details --

Details:

    Minecraft Version: 1.12.2

    Operating System: Windows 10 (amd64) version 10.0

    Java Version: 1.8.0_341, Oracle Corporation

    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation

    Memory: 343478880 bytes (327 MB) / 1073741824 bytes (1024 MB) up to 4294967296 bytes (4096 MB)

    JVM Flags: 5 total; -XX:+UseG1GC -XX:+AggressiveOpts -XX:+UseCompressedOops -Xmx4096M -Xms1024M

    IntCache: cache: 0, tcache: 0, allocated: 20, tallocated: 86

    CraftBukkit Information: 

   Running: CatServer version git-Spigot-dcd1643-e60fc34 (MC: 1.12.2) (Implementing API version 1.12.2-R0.1-SNAPSHOT) true

   Plugins: { VTV1 v1.4.1 com.wizardscraft.VariableTriggers [LexLaiden, Lyoko Firelyte, Kakifrucht], MultiWorld v5.2.8 multiworld.MultiWorldPlugin [ferrybig], WorldEdit v6.1.9;caf0ad9 com.sk89q.worldedit.bukkit.WorldEditPlugin [], Lockette v1.8.23 org.yi.acru.bukkit.Lockette.Lockette [Acru, ElgarL, vk2gpz], WorldGuard v6.2.1;84bc322 com.sk89q.worldguard.bukkit.WorldGuardPlugin [], RPGItems v3.5.143 think.rpgitems.Plugin [],}

   Warnings: DEFAULT

   Reload Count: 0

   Threads: { TIMED_WAITING Spigot Watchdog Thread: [java.lang.Thread.sleep(Native Method), org.spigotmc.WatchdogThread.run(WatchdogThread.java:93)], TIMED_WAITING ForkJoinPool.commonPool-worker-25: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.ForkJoinPool.awaitWork(Unknown Source), java.util.concurrent.ForkJoinPool.runWorker(Unknown Source), java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)], RUNNABLE DestroyJavaVM: [], WAITING pool-25-thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.park(Unknown Source), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source), java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(Unknown Source), java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(Unknown Source), java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source), java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source), java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], TIMED_WAITING Craft Scheduler Thread - 0: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source), java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(Unknown Source), java.util.concurrent.SynchronousQueue$TransferStack.transfer(Unknown Source), java.util.concurrent.SynchronousQueue.poll(Unknown Source), java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source), java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source), java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], TIMED_WAITING pool-17-thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(Unknown Source), java.util.concurrent.LinkedBlockingDeque.pollFirst(Unknown Source), java.util.concurrent.LinkedBlockingDeque.poll(Unknown Source), java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source), java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source), java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], WAITING Reference Handler: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Unknown Source), java.lang.ref.Reference.tryHandlePending(Unknown Source), java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)], RUNNABLE Signal Dispatcher: [], TIMED_WAITING Timer-2: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], RUNNABLE Server thread: [java.lang.Thread.dumpThreads(Native Method), java.lang.Thread.getAllStackTraces(Unknown Source), org.bukkit.craftbukkit.v1_12_R1.CraftCrashReport.call(CraftCrashReport.java:29), net.minecraft.crash.CrashReportCategory.func_189529_a(CrashReportCategory.java:96), net.minecraft.crash.CrashReport.func_71504_g(CrashReport.java:120), net.minecraft.crash.CrashReport.<init>(CrashReport.java:41), net.minecraft.crash.CrashReport.func_85055_a(CrashReport.java:361), net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:901), net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:472), net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:779), net.minecraft.server.MinecraftServer.run(MinecraftServer.java:633), java.lang.Thread.run(Unknown Source)], TIMED_WAITING pool-23-thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(Unknown Source), java.util.concurrent.LinkedBlockingDeque.pollFirst(Unknown Source), java.util.concurrent.LinkedBlockingDeque.poll(Unknown Source), java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source), java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source), java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], WAITING ForkJoinPool.commonPool-worker-11: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.ForkJoinPool.awaitWork(Unknown Source), java.util.concurrent.ForkJoinPool.runWorker(Unknown Source), java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)], WAITING ForkJoinPool.commonPool-worker-18: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.ForkJoinPool.awaitWork(Unknown Source), java.util.concurrent.ForkJoinPool.runWorker(Unknown Source), java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)], RUNNABLE Netty Server IO #1: [sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method), sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source), sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source), sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source), sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source), sun.nio.ch.SelectorImpl.select(Unknown Source), io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62), io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:732), io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:388), io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858), java.lang.Thread.run(Unknown Source)], RUNNABLE Server console handler: [org.fusesource.jansi.internal.Kernel32.ReadConsoleInputW(Native Method), org.fusesource.jansi.internal.Kernel32.readConsoleInputHelper(Kernel32.java:761), org.fusesource.jansi.internal.Kernel32.readConsoleKeyInput(Kernel32.java:794), org.fusesource.jansi.internal.WindowsSupport.readConsoleInput(WindowsSupport.java:97), jline.WindowsTerminal.readConsoleInput(WindowsTerminal.java:214), jline.WindowsTerminal.access$000(WindowsTerminal.java:54), jline.WindowsTerminal$1.read(WindowsTerminal.java:156), jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:166), jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:135), jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:243), jline.internal.InputStreamReader.read(InputStreamReader.java:257), jline.internal.InputStreamReader.read(InputStreamReader.java:194), jline.console.ConsoleReader.readCharacter(ConsoleReader.java:2136), jline.console.ConsoleReader.readCharacter(ConsoleReader.java:2126), jline.console.ConsoleReader.readBinding(ConsoleReader.java:2211), jline.console.ConsoleReader.readLine(ConsoleReader.java:2460), jline.console.ConsoleReader.readLine(ConsoleReader.java:2372), net.minecraft.server.dedicated.DedicatedServer$2.run(DedicatedServer.java:120)], TIMED_WAITING threadDeathWatcher-2-1: [java.lang.Thread.sleep(Native Method), io.netty.util.ThreadDeathWatcher$Watcher.run(ThreadDeathWatcher.java:152), io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144), java.lang.Thread.run(Unknown Source)], RUNNABLE Attach Listener: [], WAITING NonBlockingInputStreamThread: [java.lang.Object.wait(Native Method), jline.internal.NonBlockingInputStream.run(NonBlockingInputStream.java:275), java.lang.Thread.run(Unknown Source)], TIMED_WAITING File IO Thread: [java.lang.Thread.sleep(Native Method), net.minecraft.world.storage.ThreadedFileIOBase.func_75736_b(SourceFile:51), net.minecraft.world.storage.ThreadedFileIOBase.run(SourceFile:30), java.lang.Thread.run(Unknown Source)], TIMED_WAITING pool-14-thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(Unknown Source), java.util.concurrent.LinkedBlockingDeque.pollFirst(Unknown Source), java.util.concurrent.LinkedBlockingDeque.poll(Unknown Source), java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source), java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source), java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], TIMED_WAITING Timer-0: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], RUNNABLE Netty Server IO #0: [sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method), sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source), sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source), sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source), sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source), sun.nio.ch.SelectorImpl.select(Unknown Source), io.netty.channel.nio.SelectedSelectionKeySetSelector.select(SelectedSelectionKeySetSelector.java:62), io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:732), io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:388), io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858), java.lang.Thread.run(Unknown Source)], WAITING Thread-4: [org.fusesource.jansi.internal.Kernel32.SetConsoleTextAttribute(Native Method), org.fusesource.jansi.WindowsAnsiOutputStream.applyAttribute(WindowsAnsiOutputStream.java:117), org.fusesource.jansi.WindowsAnsiOutputStream.processSetForegroundColor(WindowsAnsiOutputStream.java:232), org.fusesource.jansi.AnsiOutputStream.processEscapeCommand(AnsiOutputStream.java:275), org.fusesource.jansi.AnsiOutputStream.write(AnsiOutputStream.java:125), java.io.FilterOutputStream.write(Unknown Source), java.io.PrintStream.write(Unknown Source), java.io.FilterOutputStream.write(Unknown Source), org.bukkit.craftbukkit.v1_12_R1.util.TerminalConsoleWriterThread.run(TerminalConsoleWriterThread.java:40), java.lang.Thread.run(Unknown Source)], WAITING ForkJoinPool.commonPool-worker-4: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.ForkJoinPool.awaitWork(Unknown Source), java.util.concurrent.ForkJoinPool.runWorker(Unknown Source), java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)], TIMED_WAITING Timer-1: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], TIMED_WAITING pool-20-thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(Unknown Source), java.util.concurrent.LinkedBlockingDeque.pollFirst(Unknown Source), java.util.concurrent.LinkedBlockingDeque.poll(Unknown Source), java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source), java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source), java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], WAITING Finalizer: [java.lang.Object.wait(Native Method), java.lang.ref.ReferenceQueue.remove(Unknown Source), java.lang.ref.ReferenceQueue.remove(Unknown Source), java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)], TIMED_WAITING Server Infinisleeper: [java.lang.Thread.sleep(Native Method), net.minecraft.server.dedicated.DedicatedServer$1.run(DedicatedServer.java:92)], TIMED_WAITING Abandoned connection cleanup thread: [java.lang.Object.wait(Native Method), java.lang.ref.ReferenceQueue.remove(Unknown Source), com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:64), java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source), java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], TIMED_WAITING Snooper Timer: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)],}

   Recent tasks from 419-449{MultiWorld:multiworld.metrics.Metrics$1@31,}

    FML: MCP 9.42 Powered by Forge 14.23.5.2808 8 mods loaded, 8 mods active

    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

    | State  | ID           | Version      | Source                              | Signature                                |

    |:------ |:------------ |:------------ |:----------------------------------- |:---------------------------------------- |

    | LCHIJA | minecraft    | 1.12.2       | minecraft.jar                       | None                                     |

    | LCHIJA | mcp          | 9.42         | minecraft.jar                       | None                                     |

    | LCHIJA | FML          | 8.0.99.99    | CatServer-git-917005d-Community.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |

    | LCHIJA | forge        | 14.23.5.2808 | CatServer-git-917005d-Community.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |

    | LCHIJA | bibliocraft  | 2.4.5        | BiblioCraft[v2.4.5][MC1.12.2].jar   | None                                     |

    | LCHIJA | customnpcs   | 1.12         | CustomNPCs_1.12.2-(01Oct19).jar     | None                                     |

    | LCHIJA | koreanchat   | 1.9          | koreanchat-creo-1.12-1.9.jar        | None                                     |

    | LCHIJA | harvestcraft | 1.12.2zb     | Pam's+HarvestCraft+1.12.2zg.jar     | None                                     |

    Loaded coremods (and transformers): 

    Profiler Position: N/A (disabled)

    Player Count: 1 / 20; [EntityPlayerMP['TomSedy'/349, l='world', x=29927.86, y=85.32, z=29990.31](TomSedy at 29927.861340382344,85.31793994010025,29990.307316507886)]

    Is Modded: Definitely; Server brand changed to 'fml,forge'

    Type: Dedicated Server (map_server.txt)