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  1. Minecraft: Java Edition
  2. MC-261997

Game crashes when generating new chunk / java.lang.IllegalStateException: Asking for biomes before we have biomes

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    • Icon: Bug Bug
    • Resolution: Fixed
    • 23w17a
    • 23w16a
    • None
    • Community Consensus
    • Crash
    • Very Important
    • Platform

      I was wandering around in my snapshot test world but I went too far and the game crashed. This crash did not occur when I generated a completely new world, so my current theory is that because my world was made before 1.18, and I had never traveled towards that direction, the chunk blending crashed the game.

      My world is too big, so I can't upload it here.

      The exception's message, "Asking for biomes before we have biomes", made me audibly laugh. Kudos Mojang.

      How to reproduce:

      1. Create a world in 1.17.1 or older.
      2. Upgrade the world to 23w16a.
      3. If the game doesn't immediately crash, start traveling around a bit until it does.

      Stack trace

      23w16a: crash-2023-04-20_20.34.22-server.txt
      Description: Exception generating new chunk

java.lang.IllegalStateException: Asking for biomes before we have biomes
	at deh.getNoiseBiome(SourceFile:267)
	at dic.b(SourceFile:255)
	at dic.a(SourceFile:187)
	at dic.a(SourceFile:168)
	at dic.a(SourceFile:122)
	at dib.a(SourceFile:96)
	at dds.e(SourceFile:70)
	at dds.a(SourceFile:256)
	at ahq.a(SourceFile:704)
	at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
	at ahq.a(SourceFile:693)
	at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1150)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
	at ahs.b(SourceFile:62)
	at bcl.h(SourceFile:91)
	at bcl.a(SourceFile:146)
	at bcl.run(SourceFile:102)
	at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1395)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165)

        1. crash-2023-04-20_20.34.22-server.txt
          5 kB
        2. deobf_crash-2023-04-20_20.34.22-server.txt
          10 kB

            Unassigned Unassigned
            ManosSef ManosSef
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              Created:
              Updated:
              Resolved:
              CHK: