---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 12/7/19 7:12 PM
Description: Exception ticking world

java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445)
	at java.util.HashMap$KeyIterator.next(HashMap.java:1469)
	at vk.a(SourceFile:1037)
	at bhr.a(SourceFile:233)
	at bhr.a(SourceFile:301)
	at bsg.b(SourceFile:74)
	at bmv.c(SourceFile:545)
	at bvt.b(SourceFile:269)
	at vk.a(SourceFile:466)
	at vi.a(SourceFile:405)
	at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap$1.forEach(Long2ObjectLinkedOpenHashMap.java:1661)
	at com.google.common.collect.Iterables$UnmodifiableIterable.forEach(Iterables.java:105)
	at vi.o(SourceFile:366)
	at vi.a(SourceFile:335)
	at vk.a(SourceFile:316)
	at net.minecraft.server.MinecraftServer.b(SourceFile:835)
	at uk.b(SourceFile:343)
	at net.minecraft.server.MinecraftServer.a(SourceFile:774)
	at net.minecraft.server.MinecraftServer.run(SourceFile:642)
	at java.lang.Thread.run(Thread.java:748)


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$HashIterator.nextNode(HashMap.java:1445)
	at java.util.HashMap$KeyIterator.next(HashMap.java:1469)
	at vk.a(SourceFile:1037)
	at bhr.a(SourceFile:233)
	at bhr.a(SourceFile:301)
	at bsg.b(SourceFile:74)
	at bmv.c(SourceFile:545)
	at bvt.b(SourceFile:269)
	at vk.a(SourceFile:466)
	at vi.a(SourceFile:405)
	at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap$1.forEach(Long2ObjectLinkedOpenHashMap.java:1661)
	at com.google.common.collect.Iterables$UnmodifiableIterable.forEach(Iterables.java:105)
	at vi.o(SourceFile:366)
	at vi.a(SourceFile:335)
	at vk.a(SourceFile:316)

-- Affected level --
Details:
	All players: 7 total; [vl['Major_Phule'/633, l='world', x=5441.27, y=84.00, z=589.67], vl['Lady_Toby'/2152, l='world', x=517.68, y=58.00, z=-2886.62], vl['ThatVibesGirl'/12776, l='world', x=2302.23, y=68.00, z=-2724.82], vl['kieransearl'/23408, l='world', x=7251.66, y=142.67, z=1980.10], vl['Mortiae'/28389, l='world', x=-9354.30, y=71.00, z=435.06], vl['LumpySpaceHolly'/11598, l='world', x=2835.49, y=79.00, z=-3245.57], vl['Femble'/31367, l='world', x=9891.50, y=11.00, z=-430.77]]
	Chunk stats: ServerChunkCache: 13998
	Level dimension: minecraft:overworld
	Level name: world
	Level seed: 8210109244613034996
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (4163,72,35), Chunk: (at 3,4,3 in 260,2; contains blocks 4160,0,32 to 4175,255,47), Region: (8,0; contains chunks 256,0 to 287,31, blocks 4096,0,0 to 4607,255,511)
	Level time: 1159978688 game time, 443555748 day time
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 65506 (now: false), thunder time: 3326 (now: true)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:835)
	at uk.b(SourceFile:343)
	at net.minecraft.server.MinecraftServer.a(SourceFile:774)
	at net.minecraft.server.MinecraftServer.run(SourceFile:642)
	at java.lang.Thread.run(Thread.java:748)

-- System Details --
Details:
	Minecraft Version: 1.14.4
	Minecraft Version ID: 1.14.4
	Operating System: Linux (amd64) version 3.10.0-957.27.2.el7.x86_64
	Java Version: 1.8.0_232, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 270507120 bytes (257 MB) / 1680248832 bytes (1602 MB) up to 16707485696 bytes (15933 MB)
	CPUs: 8
	JVM Flags: 5 total; -Xms128M -Xmx16000M -XX:+UseConcMarkSweepGC -XX:+DisableExplicitGC -XX:+CMSClassUnloadingEnabled
	Player Count: 7 / 99; [vl['Major_Phule'/633, l='world', x=5441.27, y=84.00, z=589.67], vl['Lady_Toby'/2152, l='world', x=517.68, y=58.00, z=-2886.62], vl['LumpySpaceHolly'/11598, l='world', x=2835.49, y=79.00, z=-3245.57], vl['ThatVibesGirl'/12776, l='world', x=2302.23, y=68.00, z=-2724.82], vl['kieransearl'/23408, l='world', x=7251.66, y=142.67, z=1980.10], vl['Mortiae'/28389, l='world', x=-9354.30, y=71.00, z=435.06], vl['Femble'/31367, l='world', x=9891.50, y=11.00, z=-430.77]]
	Data Packs: vanilla, file/anti enderman grief v1.0.0.zip, file/silence mobs v1.0.0.zip, file/customizable armor stands v2.4.0.zip, file/VanillaTweaks_c677591.zip (incompatible), file/anti ghast grief v1.0.0.zip, file/coordinates hud v1.1.1.zip, file/dragon drops elytra v1.0.2.zip, file/kill empty boats v1.0.0.zip, file/larger phantoms v1.0.0.zip, file/more mob heads v2.1.0.zip, file/multiplayer sleep v1.0.1.zip, file/pillager tools v1.0.1.zip, file/player_head_drops_v1.0.0.zip, file/terracotta rotation wrench v1.0.1.zip
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)