---- Minecraft Crash Report ---- // Hi. I'm Minecraft, and I'm a crashaholic. Time: 03/04/18 15:20 Description: Exception generating new chunk java.util.concurrent.ExecutionException: java.lang.ArrayIndexOutOfBoundsException: 637 at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2237) at sd.c(SourceFile:129) at sk.a(SourceFile:84) at sl.c(SourceFile:143) at se.k_(SourceFile:219) at net.minecraft.server.MinecraftServer.w(SourceFile:694) at net.minecraft.server.MinecraftServer.v(SourceFile:627) at czd.v(SourceFile:155) at net.minecraft.server.MinecraftServer.run(SourceFile:532) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.ArrayIndexOutOfBoundsException: 637 at it.unimi.dsi.fastutil.longs.Long2LongLinkedOpenHashMap$MapIterator.nextEntry(Long2LongLinkedOpenHashMap.java:1207) at it.unimi.dsi.fastutil.longs.Long2LongLinkedOpenHashMap$EntryIterator.next(Long2LongLinkedOpenHashMap.java:1299) at it.unimi.dsi.fastutil.longs.Long2LongLinkedOpenHashMap$EntryIterator.next(Long2LongLinkedOpenHashMap.java:1288) at atz.a(SourceFile:25) at atz.get(SourceFile:49) at it.unimi.dsi.fastutil.longs.AbstractLong2ObjectFunction.get(AbstractLong2ObjectFunction.java:148) at java.util.Map.computeIfAbsent(Map.java:955) at sw.a(SourceFile:42) at sw.a(SourceFile:23) at zt.c(SourceFile:102) at sd.d(SourceFile:153) at bnx.a(SourceFile:226) at bnx.a(SourceFile:79) at bpz.a(SourceFile:16) at bpz.a(SourceFile:13) at bkf.a(SourceFile:27) at auy.a(SourceFile:471) at bjm.a(SourceFile:298) at sr.a(SourceFile:12) at sq.a(SourceFile:33) at bia.a(SourceFile:85) at sw.a(SourceFile:54) at sw.a(SourceFile:23) at zt$a.a(SourceFile:143) at zt$a$$Lambda$990/339225255.apply(Unknown Source) at java.util.concurrent.CompletableFuture$AsyncApply.exec(CompletableFuture.java:501) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902) at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689) at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644) at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Server thread Stacktrace: at sd.a(SourceFile:178) -- Chunk to be generated -- Details: Location: -16,-18 Position hash: -73014444048 Generator: bjm@59d597b2 Stacktrace: at sd.a(SourceFile:178) at sd.c(SourceFile:132) at sk.a(SourceFile:84) at sl.c(SourceFile:143) at se.k_(SourceFile:219) at net.minecraft.server.MinecraftServer.w(SourceFile:694) at net.minecraft.server.MinecraftServer.v(SourceFile:627) at czd.v(SourceFile:155) at net.minecraft.server.MinecraftServer.run(SourceFile:532) at java.lang.Thread.run(Thread.java:745) -- Affected level -- Details: Level name: Snapshot 11a Survival Cheats All players: 1 total; [sg['Chipster70'/262, l='Snapshot 11a Survival Cheats', x=47.47, y=62.00, z=15.97]] Chunk stats: ServerChunkCache: 1415 Drop: 0 Level seed: -5578844143677451449 Level generator: ID 00 - default, ver 1. Features enabled: false Level generator options: Level spawn location: World: (0,0,0), Chunk: (at 0,0,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511) Level time: 0 game time, 0 day time Level dimension: 0 Level storage version: 0x00000 - Unknown? Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false) Level game mode: ~~ERROR~~ NullPointerException: null -- System Details -- Details: Minecraft Version: 18w11a Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_25, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 454077888 bytes (433 MB) / 1056964608 bytes (1008 MB) up to 3221225472 bytes (3072 MB) JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx3G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M Profiler Position: N/A (disabled) Player Count: 1 / 8; [sg['Chipster70'/262, l='Snapshot 11a Survival Cheats', x=47.47, y=62.00, z=15.97]] Data Packs: vanilla Type: Integrated Server (map_client.txt) Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.