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  1. Minecraft: Java Edition
  2. MC-129136

Game crash: ticking world

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    Details

    • Type: Bug
    • Status: Resolved
    • Resolution: Awaiting Response
    • Affects Version/s: Minecraft 18w16a, Minecraft 18w21a, Minecraft 18w21b, Minecraft 18w22a, Minecraft 18w22c, Minecraft 1.13-pre1
    • Fix Version/s: None
    • Labels:
      None
    • Confirmation Status:
      Community Consensus
    • Category:
      (Unassigned)

      Description

      When loading some chunks, that were previously generated, the server randomly crashed (a few times).
      Restarting the server made the game continue as normal, so it doesn't happen multiple times for the same chunk.
      There's nothing special in the chunks, just some colored terracotta and (infested) stone mainly; no entities.

      ---- Minecraft Crash Report ----
      // Surprise! Haha. Well, this is awkward.
      
      Time: 3-5-18 13:45
      Description: Exception ticking world
      
      java.lang.NullPointerException: Exception ticking world
      	at sh.o_(SourceFile:418)
      	at sh.k_(SourceFile:216)
      	at net.minecraft.server.MinecraftServer.w(SourceFile:696)
      	at rs.w(SourceFile:367)
      	at net.minecraft.server.MinecraftServer.v(SourceFile:629)
      	at net.minecraft.server.MinecraftServer.run(SourceFile:534)
      	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 sh.o_(SourceFile:418)
      	at sh.k_(SourceFile:216)
      
      -- Affected level --
      Details:
      	Level name: medabots_server
      	All players: 1 total; [sj['FVbico'/13, l='medabots_server', x=-1489,98, y=109,07, z=485,14]]
      	Chunk stats: ServerChunkCache: 1217 Drop: 0
      	Level seed: 64
      	Level generator: ID 01 - flat, ver 0. Features enabled: false
      	Level generator options: {"flat_world_options":"minecraft:bedrock,49*minecraft:stone,4*minecraft:dirt,minecraft:grass_block;4;"}
      	Level spawn location: World: (11,54,-38), Chunk: (at 11,3,10 in 0,-3; contains blocks 0,0,-48 to 15,255,-33), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
      	Level time: 67135918 game time, 6000 day time
      	Level dimension: 0
      	Level storage version: 0x04ABD - Anvil
      	Level weather: Rain time: 1 (now: false), thunder time: 1 (now: false)
      	Level game mode: Game mode: adventure (ID 2). Hardcore: false. Cheats: false
      Stacktrace:
      	at net.minecraft.server.MinecraftServer.w(SourceFile:696)
      	at rs.w(SourceFile:367)
      	at net.minecraft.server.MinecraftServer.v(SourceFile:629)
      	at net.minecraft.server.MinecraftServer.run(SourceFile:534)
      	at java.lang.Thread.run(Unknown Source)
      
      -- System Details --
      Details:
      	Minecraft Version: 18w16a
      	Operating System: Windows 10 (amd64) version 10.0
      	Java Version: 1.8.0_161, Oracle Corporation
      	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
      	Memory: 1541178888 bytes (1469 MB) / 2061500416 bytes (1966 MB) up to 2061500416 bytes (1966 MB)
      	JVM Flags: 2 total; -Xms2G -Xmx2G
      	Profiler Position: N/A (disabled)
      	Player Count: 1 / 100; [sj['FVbico'/13, l='medabots_server', x=-1489,98, y=109,07, z=485,14]]
      	Data Packs: vanilla, file/Medabots Server (incompatible)
      	Is Modded: Unknown (can't tell)
      	Type: Dedicated Server (map_server.txt)

      Note: some other people seem to have a different NullPointerException ticking world crash with different class files:

      java.lang.NullPointerException: Exception ticking world
      at bwi.a(SourceFile:186)
      at bwi.a(SourceFile:92)
      at bwm.d(SourceFile:60)
      at brt.a(SourceFile:298)
      at sj.a(SourceFile:307)
      at sk.a(SourceFile:249)
      at bbo.a(SourceFile:144)
      at sk.i_(SourceFile:199)
      at net.minecraft.server.MinecraftServer.w(SourceFile:694)
      at net.minecraft.server.MinecraftServer.v(SourceFile:627)
      at dii.v(SourceFile:156)
      at net.minecraft.server.MinecraftServer.run(SourceFile:532)
      at java.lang.Thread.run(Unknown Source)

      Mod edit: Copied over from MC-130132:

      When loading a 18w20c generated Buffet World (Warm Ocean) in newer snapshot 18w21a, a fatal NullPointerException occurs, causing the game to crash.

      To Reproduce

      1. Download, extract and place in the saves folder the Minecraft world at http://www.mediafire.com/file/l189qh7bt163aqy/2018-05-23_14-35-40_New_World-.zip/file
      2. In the playerdata folder for the save, rename the existing user.dat file to contain your Minecraft UUID (required for issue reproduction)
      3. Launch snapshot 18w21a or newer
      4. Select Single Player
      5. Select the extracted world with your renamed player data file
      6. When prompted, click the "I know what I'm doing" button

      Notes

      • Subsequent loads of the world will not generate error, only the first load of the 18w20c will cause the issue

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              Assignee:
              Unassigned Unassigned
              Reporter:
              urielsalis [Mod] Urielsalis
              Votes:
              14 Vote for this issue
              Watchers:
              11 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved:
                CHK: