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  1. Minecraft: Java Edition
  2. MC-181298

Game crashes when trying to generate a nether biome superflat world with ruined portals

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    Details

    • Type: Bug
    • Status: Resolved
    • Resolution: Fixed
    • Affects Version/s: 20w16a, 20w17a
    • Fix Version/s: 20w21a
    • Labels:
      None
    • Confirmation Status:
      Confirmed
    • Category:
      Crash
    • Mojang Priority:
      Very Important

      Description

      The following presets crash minecraft (Crash logs attached):

      minecraft:bedrock,2*minecraft:dirt,minecraft:netherrack;minecraft:warped_forest;bastion,ruined_portal,fortress
      minecraft:bedrock,2*minecraft:dirt,minecraft:netherrack;minecraft:warped_forest;bastion,ruined_portal
      

      Stack trace

      Description: Exception generating new chunk
      
      java.lang.NullPointerException: Exception generating new chunk
      	at chu.b(SourceFile:21)
      	at chu$$Lambda$1177/1489504599.test(Unknown Source)
      	at cle.b(SourceFile:226)
      	at cle.a(SourceFile:33)
      	at cle$a.a(SourceFile:158)
      	at cfy.a(SourceFile:206)
      	at cgc.d(SourceFile:51)
      	at cgc$$Lambda$1273/1297259456.doWork(Unknown Source)
      	at cgc.a(SourceFile:214)
      	at yd.a(SourceFile:568)
      	at yd$$Lambda$3457/988352912.apply(Unknown Source)
      	at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
      	at yd.a(SourceFile:562)
      	at yd$$Lambda$3454/814546249.apply(Unknown Source)
      	at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:952)
      	at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926)
      	at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442)
      	at yf.b(SourceFile:58)
      	at yf$$Lambda$3400/1443113591.run(Unknown Source)
      	at als.e(SourceFile:83)
      	at als.a(SourceFile:123)
      	at als.run(SourceFile:91)
      	at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402)
      	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
      	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
      	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1689)
      	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
      

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              Assignee:
              mgatland [Mojang] Matthew Gatland
              Reporter:
              Hex_dragon Peter K
              Votes:
              2 Vote for this issue
              Watchers:
              4 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved:
                CHK: