Đã giải quyết Crash server

---- Minecraft Crash Report ----
// You're mean.

Time: 4/9/17 9:26 PM
Description: Exception ticking world

java.util.ConcurrentModificationException
at java.util.LinkedList$ListItr.checkForComodification(Unknown Source)
at java.util.LinkedList$ListItr.next(Unknown Source)
at net.minecraft.server.v1_9_R2.StructureStart.a(SourceFile:40)
at net.minecraft.server.v1_9_R2.StructureGenerator.a(StructureGenerator.java:81)
at net.minecraft.server.v1_9_R2.ChunkProviderGenerate.recreateStructures(SourceFile:436)
at org.bukkit.craftbukkit.v1_9_R2.generator.NormalChunkGenerator.recreateStructures(NormalChunkGenerator.java:41)
at net.minecraft.server.v1_9_R2.Chunk.a(Chunk.java:934)
at net.minecraft.server.v1_9_R2.Chunk.loadNearby(Chunk.java:913)
at net.minecraft.server.v1_9_R2.ChunkProviderServer.originalGetChunkAt(ChunkProviderServer.java:195)
at net.minecraft.server.v1_9_R2.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:133)
at net.minecraft.server.v1_9_R2.PlayerChunk.a(PlayerChunk.java:112)
at net.minecraft.server.v1_9_R2.PlayerChunkMap.flush(PlayerChunkMap.java:166)
at net.minecraft.server.v1_9_R2.WorldServer.doTick(WorldServer.java:257)
at net.minecraft.server.v1_9_R2.MinecraftServer.D(MinecraftServer.java:781)
at net.minecraft.server.v1_9_R2.DedicatedServer.D(DedicatedServer.java:399)
at net.minecraft.server.v1_9_R2.MinecraftServer.C(MinecraftServer.java:665)
at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:564)
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.LinkedList$ListItr.checkForComodification(Unknown Source)
at java.util.LinkedList$ListItr.next(Unknown Source)
at net.minecraft.server.v1_9_R2.StructureStart.a(SourceFile:40)
at net.minecraft.server.v1_9_R2.StructureGenerator.a(StructureGenerator.java:81)
at net.minecraft.server.v1_9_R2.ChunkProviderGenerate.recreateStructures(SourceFile:436)
at org.bukkit.craftbukkit.v1_9_R2.generator.NormalChunkGenerator.recreateStructures(NormalChunkGenerator.java:41)
at net.minecraft.server.v1_9_R2.Chunk.a(Chunk.java:934)
at net.minecraft.server.v1_9_R2.Chunk.loadNearby(Chunk.java:913)
at net.minecraft.server.v1_9_R2.ChunkProviderServer.originalGetChunkAt(ChunkProviderServer.java:195)
at net.minecraft.server.v1_9_R2.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:133)
at net.minecraft.server.v1_9_R2.PlayerChunk.a(PlayerChunk.java:112)
at net.minecraft.server.v1_9_R2.PlayerChunkMap.flush(PlayerChunkMap.java:166)
at net.minecraft.server.v1_9_R2.WorldServer.doTick(WorldServer.java:257)

-- Affected level --
Details:
Level name: world
All players: 10 total; [EntityPlayer['Skyline_Is_King'/720, l='world', x=-115.43, y=46.00, z=-1315.17](Skyline_Is_King at -115.42747654929117,46.0,-1315.168891362747), EntityPlayer['thaianh285'/9225, l='world', x=999963.79, y=87.00, z=-54.16](thaianh285 at 999963.7919199176,87.00133597911214,-54.162716078750336), EntityPlayer['nguyendeeptry'/36237, l='world', x=412.14, y=65.00, z=21052.66](nguyendeeptry at 412.1414213627577,65.0,21052.660145835194), EntityPlayer['Kirigaya'/116885, l='world', x=1000202.30, y=65.00, z=150.18](Kirigaya at 1000202.3000000119,65.0,150.1760550854039), EntityPlayer['GoodGame'/119207, l='world', x=495.18, y=44.00, z=-260.21](GoodGame at 495.1776428554228,44.0,-260.20610429925625), EntityPlayer['HeroDark'/120737, l='world', x=6345.50, y=68.00, z=40817.76](HeroDark at 6345.501559808045,68.0,40817.75858500236), EntityPlayer['Red_15'/122944, l='world', x=999947.50, y=79.00, z=-47.86](Red_15 at 999947.5020336494,79.0,-47.86493250370908), EntityPlayer['2804'/123610, l='world', x=720.66, y=50.00, z=-1795.47](2804 at 720.6555542527409,50.0,-1795.4724237194444), EntityPlayer['Aquaman'/131204, l='world', x=1000016.01, y=77.80, z=121.06](Aquaman at 1000016.0054944868,77.79704142270529,121.06097488553748), EntityPlayer['Kisa'/135620, l='world', x=999962.56, y=72.00, z=27.88](Kisa at 999962.5604714559,72.0,27.883580918541654)]
Chunk stats: ServerChunkCache: 11990 Drop: 854
Level seed: 7357396028175475541
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (999975,76,9), Chunk: (at 7,4,9 in 62498,0; contains blocks 999968,0,0 to 999983,255,15), Region: (1953,0; contains chunks 62496,0 to 62527,31, blocks 999936,0,0 to 1000447,255,511)
Level time: 32781221 game time, 34934915 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 86064 (now: false), thunder time: 4914 (now: true)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
at net.minecraft.server.v1_9_R2.MinecraftServer.D(MinecraftServer.java:781)
at net.minecraft.server.v1_9_R2.DedicatedServer.D(DedicatedServer.java:399)
at net.minecraft.server.v1_9_R2.MinecraftServer.C(MinecraftServer.java:665)
at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:564)
at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
Minecraft Version: 1.9.4
Operating System: Windows Server 2012 R2 (amd64) version 6.3
Java Version: 1.8.0_121, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 2936028344 bytes (2800 MB) / 4139253760 bytes (3947 MB) up to 4139253760 bytes (3947 MB)
JVM Flags: 2 total; -Xms4G -Xmx4G
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
CraftBukkit Information: org.bukkit.craftbukkit.v1_9_R2.CraftCrashReport@799e1a6b
Profiler Position: N/A (disabled)
Player Count: 11 / 25; [EntityPlayer['Skyline_Is_King'/720, l='world', x=-115.43, y=46.00, z=-1315.17](Skyline_Is_King at -115.42747654929117,46.0,-1315.168891362747), EntityPlayer['JackGamerTM'/212, l='world_the_end', x=771.65, y=57.00, z=-1087.34](JackGamerTM at 771.6468267882761,57.0,-1087.3419617781972), EntityPlayer['thaianh285'/9225, l='world', x=999963.79, y=87.00, z=-54.16](thaianh285 at 999963.7919199176,87.00133597911214,-54.162716078750336), EntityPlayer['nguyendeeptry'/36237, l='world', x=412.14, y=65.00, z=21052.66](nguyendeeptry at 412.1414213627577,65.0,21052.660145835194), EntityPlayer['Kirigaya'/116885, l='world', x=1000202.30, y=65.00, z=150.18](Kirigaya at 1000202.3000000119,65.0,150.1760550854039), EntityPlayer['GoodGame'/119207, l='world', x=495.18, y=44.00, z=-260.21](GoodGame at 495.1776428554228,44.0,-260.20610429925625), EntityPlayer['HeroDark'/120737, l='world', x=6345.50, y=68.00, z=40817.76](HeroDark at 6345.501559808045,68.0,40817.75858500236), EntityPlayer['Red_15'/122944, l='world', x=999947.50, y=79.00, z=-47.86](Red_15 at 999947.5020336494,79.0,-47.86493250370908), EntityPlayer['2804'/123610, l='world', x=720.66, y=50.00, z=-1795.47](2804 at 720.6555542527409,50.0,-1795.4724237194444), EntityPlayer['Aquaman'/131204, l='world', x=1000016.01, y=77.80, z=121.06](Aquaman at 1000016.0054944868,77.79704142270529,121.06097488553748), EntityPlayer['Kisa'/135620, l='world', x=999962.56, y=72.00, z=27.88](Kisa at 999962.5604714559,72.0,27.883580918541654)]
Is Modded: Definitely; Server brand changed to 'Spigot'
Type: Dedicated Server (map_server.txt)

pastebin.com

^ player đi xa quá, lỗi tạo công trình của Minecraft (Pyramid, Temple, etc....) => lỗi chunk => crash

- cài WorldBorder giới hạn world lại

vậy bây giờ cài vào là không crash nữa fk anh