Solved Server crashing on 1.11.2

Discussion in 'Spigot Help' started by davewolax, Jun 9, 2017.

Thread Status:
Not open for further replies.
  1. Hi,
    Recently hub server suddenly started acting strange and crashing randomly. some players join and it crash. but sometimes, same player joins but it doesn't crash. whats going on?

    • Server version 1.11.2
    • Suspected plugin: ViaVersion (contacted developer, but he said its not his plugin side its spigot or corrupt chunk?)
    • New plugins? No, didn't install any new plugin . no changes in database or anything.

    Here is the Logs. would appreciate any help. thank you

    Code (Text):
    [10:58:26] [Server thread/ERROR]: Encountered an unexpected exception
    net.minecraft.server.v1_11_R1.ReportedException: Ticking player
        at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:825) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:678) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:576) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_45-internal]
    Caused by: java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429) ~[?:1.8.0_45-internal]
        at java.util.HashMap$KeyIterator.next(HashMap.java:1453) ~[?:1.8.0_45-internal]
        at net.minecraft.server.v1_11_R1.NBTTagCompound.g(SourceFile:384) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.NBTTagCompound.clone(SourceFile:24) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.NBTTagCompound.g(SourceFile:385) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.ItemStack.cloneItemStack(ItemStack.java:462) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.Container.b(Container.java:80) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.EntityPlayer.A_(EntityPlayer.java:225) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.World.entityJoinedWorld(World.java:1631) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.World.h(World.java:1606) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.WorldServer.l(WorldServer.java:641) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.World.tickEntities(World.java:1400) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.WorldServer.tickEntities(WorldServer.java:618) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:814) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        ... 4 more
    [10:58:26] [Server thread/ERROR]:     Cause of unexpected exception was
    java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429) ~[?:1.8.0_45-internal]
        at java.util.HashMap$KeyIterator.next(HashMap.java:1453) ~[?:1.8.0_45-internal]
        at net.minecraft.server.v1_11_R1.NBTTagCompound.g(SourceFile:384) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.NBTTagCompound.clone(SourceFile:24) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.NBTTagCompound.g(SourceFile:385) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.ItemStack.cloneItemStack(ItemStack.java:462) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.Container.b(Container.java:80) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.EntityPlayer.A_(EntityPlayer.java:225) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.World.entityJoinedWorld(World.java:1631) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.World.h(World.java:1606) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.WorldServer.l(WorldServer.java:641) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.World.tickEntities(World.java:1400) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.WorldServer.tickEntities(WorldServer.java:618) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:814) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:678) ~[Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:576) [Spigot.jar:git-Spigot-3fb9445-6e3cec8]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_45-internal]

     
  2. Get rid of ViaVersion and see if the error still comes up.
     
  3. To Check if It's the world causing it, try generating a new world and see If It still happens, also try removing ViaVersion.

    Some info about the error:

    Code (Text):
    java.util.ConcurrentModificationException is a very common exception when working with java collection classes. Java Collection classes are fail-fast, which means if the Collection will be changed while some thread is traversing over it using iterator, the iterator.next() will throw ConcurrentModificationException. Concurrent modification exception can come in case of multithreaded as well as single threaded java programming environment.
    So basically I think something is changing the contents while something is reading It, so It could be a plugin issue or a world issue as well.
     
    • Informative Informative x 1
  4. I agree with Honey
     
  5. Thanks for your reply. I actually figured it out what the problem was.
    It was because of the "AntiBot-Ultra" plugin. I forgot I recently installed that. after removing it, no more crashing and everything is stable now. thanks guys! :)
     
  6. No probem, I'm glad you solved your issue out. Don't forget to mention the issue to the author so he can fix it
     
Thread Status:
Not open for further replies.