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  1. Minecraft: Java Edition
  2. MC-160248

Slime and magma cube spawners crash the game

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    Details

    • Type: Bug
    • Status: Resolved
    • Resolution: Fixed
    • Affects Version/s: 19w35a, 19w36a
    • Fix Version/s: 19w37a
    • Labels:
    • Confirmation Status:
      Confirmed
    • Category:
      Crash
    • Mojang Priority:
      Important

      Description

      The bug

      When you put a slime egg into a spanner, it crashes your game, and when you try to get on the same world, it crashes the game until you break it.

      How to reproduce

      1. /give @s minecraft:spawner
      2. /give @s minecraft:slime_spawn_egg
      3. Place down the spawner
      4. Right click it with the spawn egg
        Game crashes

      Crash report

      Description: Rendering Block Entity
      
      java.lang.IllegalArgumentException: Attribute is already registered!
      	at akr.b(SourceFile:29)
      	at akt.b(SourceFile:30)
      	at awf.a(SourceFile:89)
      	at awf.a(SourceFile:341)
      	at bib.d(SourceFile:256)
      	at drb.a(SourceFile:20)
      	at drb.a(SourceFile:15)
      	at drb.a(SourceFile:10)
      	at dqq.a(SourceFile:139)
      	at dqq.a(SourceFile:121)
      	at dow.a(SourceFile:606)
      	at dos.b(SourceFile:840)
      	at dos.a(SourceFile:747)
      	at dos.a(SourceFile:613)
      	at czq.e(SourceFile:941)
      	at czq.b(SourceFile:402)
      	at net.minecraft.client.main.Main.main(SourceFile:194)
      
      
      A detailed walkthrough of the error, its code path and all known details is as follows:
      ---------------------------------------------------------------------------------------
      
      -- Head --
      Thread: Render thread
      Stacktrace:
      	at akr.b(SourceFile:29)
      	at akt.b(SourceFile:30)
      	at awf.a(SourceFile:89)
      	at awf.a(SourceFile:341)
      	at bib.d(SourceFile:256)
      	at drb.a(SourceFile:20)
      	at drb.a(SourceFile:15)
      	at drb.a(SourceFile:10)
      
      -- Block Entity Details --
      Details:
      	Name: minecraft:mob_spawner // bwb
      	Block: Block{minecraft:spawner}
      	Block location: World: (-53,63,0), Chunk: (at 11,3,0 in -4,0; contains blocks -64,0,0 to -49,255,15), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
      	Block: Block{minecraft:spawner}
      	Block location: World: (-53,63,0), Chunk: (at 11,3,0 in -4,0; contains blocks -64,0,0 to -49,255,15), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
      Stacktrace:
      	at dqq.a(SourceFile:139)
      	at dqq.a(SourceFile:121)
      	at dow.a(SourceFile:606)
      	at dos.b(SourceFile:840)
      	at dos.a(SourceFile:747)
      
      
      

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              • Assignee:
                slicedlime [Mojang] slicedlime
                Reporter:
                bruhbruh Marek Nowacinski
              • Votes:
                4 Vote for this issue
                Watchers:
                1 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved:
                  CHK: