---- Minecraft Crash Report ---- // Hi. I'm Minecraft, and I'm a crashaholic. Time: 11.04.19 23:37 Description: Exception ticking world java.util.ConcurrentModificationException at java.util.ArrayList$Itr.checkForComodification(Unknown Source) at java.util.ArrayList$Itr.next(Unknown Source) at bha.K(SourceFile:615) at vf.a(SourceFile:403) at net.minecraft.server.MinecraftServer.b(SourceFile:817) at net.minecraft.server.MinecraftServer.a(SourceFile:754) at dwy.a(SourceFile:128) at net.minecraft.server.MinecraftServer.run(SourceFile:629) 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.ArrayList$Itr.checkForComodification(Unknown Source) at java.util.ArrayList$Itr.next(Unknown Source) at bha.K(SourceFile:615) at vf.a(SourceFile:403) -- Affected level -- Details: Level name: #Noracist All players: 1 total; [vg['Jokke89'/27, l='#Noracist', x=-390.06, y=65.00, z=-126.61]] Chunk stats: ServerChunkCache: 3989 Level seed: 5346227721037004051 Level generator: ID 00 - default, ver 1. Features enabled: true Level generator options: {} Level spawn location: World: (60,65,-587), Chunk: (at 12,4,5 in 3,-37; contains blocks 48,0,-592 to 63,255,-577), Region: (0,-2; contains chunks 0,-64 to 31,-33, blocks 0,0,-1024 to 511,255,-513) Level time: 1719090907 game time, 1737576589 day time Level dimension: -1 Level storage version: 0x04ABD - Anvil Level weather: Rain time: 136584 (now: false), thunder time: 15555 (now: false) Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false Stacktrace: at net.minecraft.server.MinecraftServer.b(SourceFile:817) at net.minecraft.server.MinecraftServer.a(SourceFile:754) at dwy.a(SourceFile:128) at net.minecraft.server.MinecraftServer.run(SourceFile:629) at java.lang.Thread.run(Unknown Source) -- System Details -- Details: Minecraft Version: 1.14 Pre-Release 1 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_162, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 531866504 bytes (507 MB) / 2276982784 bytes (2171 MB) up to 2863661056 bytes (2731 MB) JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx3G Player Count: 1 / 8; [vg['Jokke89'/27, l='#Noracist', x=-390.06, y=65.00, z=-126.61]] Data Packs: vanilla Type: Integrated Server (map_client.txt) Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.