Cannot invoke "com.mojang.datafixers.util.Either.left()" because "$$6" is null

Description: Exception ticking world

java.lang.NullPointerException: Cannot invoke "com.mojang.datafixers.util.Either.left()" because "$$6" is null
	at acv.a(SourceFile:329)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:646)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:614)
	at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1163)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
	at acx.b(SourceFile:58)
	at auk.g(SourceFile:91)
	at auk.a(SourceFile:146)
	at auk.run(SourceFile:102)
	at java.base/java.util.concurrent.ForkJoinTask$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)

Description: Ticking player

java.lang.NullPointerException: Cannot invoke "com.mojang.datafixers.util.Either.left()" because "$$6" is null
	at net.minecraft.server.level.ChunkMap.java.util.concurrent.CompletableFuture getChunkRangeFuture(net.minecraft.world.level.ChunkPos,int,java.util.function.IntFunction)(ChunkMap.java:329)
	at net.minecraft.server.level.ChunkMap.com.mojang.datafixers.util.Either lambda$getChunkRangeFuture$3(int,int,int,java.util.List)(ChunkMap.java:329)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:646)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:614)
	at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1163)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
	at net.minecraft.server.level.ChunkTaskPriorityQueueSorter.void lambda$message$1(java.lang.Runnable,net.minecraft.util.thread.ProcessorHandle)(ChunkTaskPriorityQueueSorter.java:58)
	at net.minecraft.util.thread.ProcessorMailbox.boolean pollTask()(ProcessorMailbox.java:91)
	at net.minecraft.util.thread.ProcessorMailbox.int pollUntil(it.unimi.dsi.fastutil.ints.Int2BooleanFunction)(ProcessorMailbox.java:146)
	at net.minecraft.util.thread.ProcessorMailbox.void run()(ProcessorMailbox.java:102)
	at java.base/java.util.concurrent.ForkJoinTask$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)

Description: Exception initializing level

java.lang.NullPointerException: Cannot invoke "com.mojang.datafixers.util.Either.left()" because "$$6" is null
	at net.minecraft.server.level.ChunkMap.java.util.concurrent.CompletableFuture getChunkRangeFuture(net.minecraft.world.level.ChunkPos,int,java.util.function.IntFunction)(ChunkMap.java:329)
	at net.minecraft.server.level.ChunkMap.com.mojang.datafixers.util.Either lambda$getChunkRangeFuture$3(int,int,int,java.util.List)(ChunkMap.java:329)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:646)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:614)
	at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1163)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
	at net.minecraft.server.level.ChunkTaskPriorityQueueSorter.void lambda$message$1(java.lang.Runnable,net.minecraft.util.thread.ProcessorHandle)(ChunkTaskPriorityQueueSorter.java:58)
	at net.minecraft.util.thread.ProcessorMailbox.boolean pollTask()(ProcessorMailbox.java:91)
	at net.minecraft.util.thread.ProcessorMailbox.int pollUntil(it.unimi.dsi.fastutil.ints.Int2BooleanFunction)(ProcessorMailbox.java:146)
	at net.minecraft.util.thread.ProcessorMailbox.void run()(ProcessorMailbox.java:102)
	at java.base/java.util.concurrent.ForkJoinTask$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)