---- Minecraft Crash Report ----
// But it works on my machine.

Time: 7/13/19 9:25 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 java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1042)
	at axf.y(SourceFile:259)
	at axf.o(SourceFile:389)
	at axh.a(SourceFile:72)
	at vi.a(SourceFile:325)
	at net.minecraft.server.MinecraftServer.b(SourceFile:824)
	at ui.b(SourceFile:343)
	at net.minecraft.server.MinecraftServer.a(SourceFile:763)
	at net.minecraft.server.MinecraftServer.run(SourceFile:631)
	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 java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1042)
	at axf.y(SourceFile:259)
	at axf.o(SourceFile:389)
	at axh.a(SourceFile:72)
	at vi.a(SourceFile:325)

-- Affected level --
Details:
	All players: 8 total; [vj['Luigifan77'/28405, l='Craftis', x=673.25, y=24.00, z=2158.94], vj['XemTheWildCard'/108947, l='Craftis', x=24.69, y=71.00, z=10.36], vj['RadioactiveSean'/109536, l='Craftis', x=612.03, y=94.31, z=2197.68], vj['Juice_Polydot'/113474, l='Craftis', x=686.09, y=18.00, z=2157.15], vj['MrPieYouTube'/124531, l='Craftis', x=468.25, y=89.71, z=1964.50], vj['Pandax741'/126365, l='Craftis', x=-86.50, y=85.71, z=61.37], vj['tes_slam_jam'/100707, l='Craftis', x=696.16, y=18.02, z=2134.22], vj['Sojiro_Sakura'/107802, l='Craftis', x=692.52, y=18.12, z=2152.77]]
	Chunk stats: ServerChunkCache: 6077
	Level dimension: minecraft:overworld
	Level name: Craftis
	Level seed: -1366599789
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (-100,76,165), Chunk: (at 12,4,5 in -7,10; contains blocks -112,0,160 to -97,255,175), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 149772267 game time, 1708778 day time
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 12129 (now: false), thunder time: 1592 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:824)
	at ui.b(SourceFile:343)
	at net.minecraft.server.MinecraftServer.a(SourceFile:763)
	at net.minecraft.server.MinecraftServer.run(SourceFile:631)
	at java.lang.Thread.run(Thread.java:748)

-- System Details --
Details:
	Minecraft Version: 1.14.3
	Operating System: Linux (amd64) version 4.18.0-25-generic
	Java Version: 1.8.0_212, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 2617587544 bytes (2496 MB) / 4231528448 bytes (4035 MB) up to 4231528448 bytes (4035 MB)
	JVM Flags: 2 total; -Xmx4096M -Xms1024M
	Player Count: 8 / 20; [vj['Luigifan77'/28405, l='Craftis', x=673.25, y=24.00, z=2158.94], vj['tes_slam_jam'/100707, l='Craftis', x=696.16, y=18.02, z=2134.22], vj['Sojiro_Sakura'/107802, l='Craftis', x=692.52, y=18.12, z=2152.77], vj['XemTheWildCard'/108947, l='Craftis', x=24.69, y=71.00, z=10.36], vj['RadioactiveSean'/109536, l='Craftis', x=612.03, y=94.31, z=2197.68], vj['Juice_Polydot'/113474, l='Craftis', x=686.09, y=18.00, z=2157.15], vj['MrPieYouTube'/124531, l='Craftis', x=468.25, y=89.71, z=1964.50], vj['Pandax741'/126365, l='Craftis', x=-86.50, y=85.71, z=61.37]]
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)