---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 24/10/21, 1:00 pm
Description: Exception in server tick loop

java.util.concurrent.CompletionException: java.lang.OutOfMemoryError: Java heap space
	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314)
	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319)
	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1766)
	at atd.c(SourceFile:151)
	at ace$b.c(SourceFile:534)
	at atd.y(SourceFile:125)
	at ace$b.y(SourceFile:543)
	at ace.d(SourceFile:278)
	at net.minecraft.server.MinecraftServer.bg(SourceFile:771)
	at net.minecraft.server.MinecraftServer.y(SourceFile:759)
	at atd.bq(SourceFile:110)
	at net.minecraft.server.MinecraftServer.x(SourceFile:743)
	at net.minecraft.server.MinecraftServer.w(SourceFile:694)
	at net.minecraft.server.MinecraftServer.a(SourceFile:274)
	at java.base/java.lang.Thread.run(Thread.java:831)
Caused by: java.lang.OutOfMemoryError: Java heap space
	at it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap.rehash(Long2ObjectOpenHashMap.java:1331)
	at it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap.insert(Long2ObjectOpenHashMap.java:279)
	at it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap.put(Long2ObjectOpenHashMap.java:287)
	at cqg.a(SourceFile:124)
	at cqg.b(SourceFile:108)
	at cqg.d(SourceFile:80)
	at bfy.a(SourceFile:193)
	at cpy.a(SourceFile:115)
	at abt.m(SourceFile:580)
	at abt$$Lambda$5307/0x0000000100b454b0.get(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1764)
	at atd.c(SourceFile:151)
	at ace$b.c(SourceFile:534)
	at atd.y(SourceFile:125)
	at ace$b.y(SourceFile:543)
	at ace.d(SourceFile:278)
	at net.minecraft.server.MinecraftServer.bg(SourceFile:771)
	at net.minecraft.server.MinecraftServer.y(SourceFile:759)
	at atd.bq(SourceFile:110)
	at net.minecraft.server.MinecraftServer.x(SourceFile:743)
	at net.minecraft.server.MinecraftServer.w(SourceFile:694)
	at net.minecraft.server.MinecraftServer.a(SourceFile:274)
	at net.minecraft.server.MinecraftServer$$Lambda$5246/0x0000000100b10f38.run(Unknown Source)
	... 1 more


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

-- System Details --
Details:
	Minecraft Version: 21w42a
	Minecraft Version ID: 21w42a
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 16.0.1, Microsoft
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
	Memory: 467906784 bytes (446 MiB) / 2147483648 bytes (2048 MiB) up to 2147483648 bytes (2048 MiB)
	CPUs: 4
	Processor Vendor: GenuineIntel
	Processor Name: Intel(R) Core(TM) i3-9100F CPU @ 3.60GHz
	Identifier: Intel64 Family 6 Model 158 Stepping 10
	Microarchitecture: Coffee Lake
	Frequency (GHz): 3.60
	Number of physical packages: 1
	Number of physical CPUs: 4
	Number of logical CPUs: 4
	Graphics card #0 name: Radeon RX550/550 Series
	Graphics card #0 vendor: Advanced Micro Devices, Inc. (0x1002)
	Graphics card #0 VRAM (MB): 4095.00
	Graphics card #0 deviceId: 0x699f
	Graphics card #0 versionInfo: DriverVersion=27.20.22001.14011
	Memory slot #0 capacity (MB): 16384.00
	Memory slot #0 clockSpeed (GHz): 2.40
	Memory slot #0 type: DDR4
	Virtual memory max (MB): 18758.24
	Virtual memory used (MB): 15026.74
	Swap memory total (MB): 2432.00
	Swap memory used (MB): 130.74
	JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	Player Count: 1 / 8; [ach['redacted'/208, l='ServerLevel[S1v21w42a]', x=-7843.50, y=319.00, z=6720.50]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Client jar signature and brand is untouched; Server jar signature and brand is untouched