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Bug
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Resolution: Fixed
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1.16.2 Pre-release 2
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None
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Community Consensus
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Crash, Custom Worlds
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Very Important
The game crashes when a biome doesn't include the spawners arrays.
Crash
"spawners": {}
No crash
"spawners": { "monster": [], "creature": [], "ambient": [], "water_creature": [], "water_ambient": [], "misc": [] },
Usually when certain fields are non optional, there is an error in the log and the biome doesn't load. However this is not the case here, and the game crashes.
I have also experienced this freezing the game as seen in the screenshots
How to reproduce
- Download the empty_spawners.zip
data pack and install it in a world - Teleport to the blip:test dimension
execute in blip:test run tp @s ~ ~ ~
The game crashes
1.16.2-pre2: crash-2020-08-06_15.24.44-server.txt
Time: 8/6/20 3:24 PM Description: Exception in server tick loop java.util.concurrent.CompletionException: u: Exception generating new chunk at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273) at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280) at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:961) at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926) at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) at zu.b(SourceFile:58) at zu$$Lambda$4225/119868154.run(Unknown Source) at aob.e(SourceFile:94) at aob.a(SourceFile:137) at aob.run(SourceFile:105) at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1689) at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) Caused by: u: Exception generating new chunk at zs.a(SourceFile:579) at zs$$Lambda$4261/699495355.apply(Unknown Source) at com.mojang.datafixers.util.Either$Left.map(Either.java:38) at zs.a(SourceFile:562) at zs$$Lambda$4258/533721112.apply(Unknown Source) at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:952) ... 12 more Caused by: java.lang.NullPointerException at bsd.a(SourceFile:460) at chl.a(SourceFile:760) at cfx.b(SourceFile:107) at cfx$$Lambda$1772/194298413.doWork(Unknown Source) at cfx$d.doWork(SourceFile:263) at cfx.a(SourceFile:219) at zs.a(SourceFile:568) ... 17 more
