---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 11/11/21, 3:35 PM
Description: Exception in server tick loop

java.util.concurrent.CompletionException: z: Feature placement
	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315)
	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320)
	at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1159)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
	at acr.b(SourceFile:58)
	at aud.g(SourceFile:91)
	at aud.a(SourceFile:146)
	at aud.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)
Caused by: z: Feature placement
	at acp.a(SourceFile:639)
	at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
	at acp.a(SourceFile:621)
	at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1150)
	... 11 more
Caused by: java.lang.NullPointerException: Cannot invoke "ddm.a(cao, cps, java.util.Random, gh)" because the return value of "java.util.function.Supplier.get()" is null
	at dbi.a(SourceFile:75)
	at dem.a(SourceFile:88)
	at dem.a(SourceFile:84)
	at dev.a(SourceFile:62)
	at cps.a(SourceFile:259)
	at com.google.common.collect.ImmutableList.forEach(ImmutableList.java:422)
	at cps.a(SourceFile:258)
	at cpu.c(SourceFile:134)
	at cpu.a(SourceFile:274)
	at acp.a(SourceFile:627)
	... 14 more


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
	Minecraft Version: 1.18 Pre-release 1
	Minecraft Version ID: 1.18-pre1
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 17, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode, sharing), Oracle Corporation
	Memory: 943331312 bytes (899 MiB) / 2147483648 bytes (2048 MiB) up to 2147483648 bytes (2048 MiB)
	CPUs: 32
	Processor Vendor: AuthenticAMD
	Processor Name: AMD Ryzen 9 5950X 16-Core Processor            
	Identifier: AuthenticAMD Family 25 Model 33 Stepping 0
	Microarchitecture: Zen 3
	Frequency (GHz): 3.40
	Number of physical packages: 1
	Number of physical CPUs: 16
	Number of logical CPUs: 32
	Graphics card #0 name: NVIDIA GeForce GTX 1080 Ti
	Graphics card #0 vendor: NVIDIA (0x10de)
	Graphics card #0 VRAM (MB): 4095.00
	Graphics card #0 deviceId: 0x1b06
	Graphics card #0 versionInfo: DriverVersion=27.21.14.5671
	Memory slot #0 capacity (MB): 16384.00
	Memory slot #0 clockSpeed (GHz): 2.67
	Memory slot #0 type: DDR4
	Memory slot #1 capacity (MB): 16384.00
	Memory slot #1 clockSpeed (GHz): 2.67
	Memory slot #1 type: DDR4
	Virtual memory max (MB): 73639.14
	Virtual memory used (MB): 55381.87
	Swap memory total (MB): 40960.00
	Swap memory used (MB): 2103.22
	JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms1024m -Xmx2048m
	Player Count: 1 / 8; [add['WindowsBunny'/5472, l='ServerLevel[world]', x=321.46, y=119.80, z=516.69]]
	Data Packs: vanilla, file/Taller Nether.zip (incompatible), file/Enderman.zip (incompatible), file/Budding Amethyst.zip (incompatible)
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Client jar signature and brand is untouched; Server jar signature and brand is untouched