---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!

Time: 11/23/21, 12:36 PM
Description: Exception in server tick loop

java.lang.NullPointerException: Cannot invoke "it.unimi.dsi.fastutil.objects.ObjectSet.remove(Object)" because "$$4" is null
	at adb.b(SourceFile:230)
	at acv.a(SourceFile:1044)
	at adg.a(SourceFile:457)
	at aea.a(SourceFile:927)
	at vp.a(SourceFile:114)
	at vp$a.a(SourceFile:42)
	at qt.a(SourceFile:21)
	at yx.run(SourceFile:18)
	at auh.c(SourceFile:151)
	at aul.c(SourceFile:23)
	at net.minecraft.server.MinecraftServer.b(SourceFile:780)
	at net.minecraft.server.MinecraftServer.c(SourceFile:162)
	at auh.y(SourceFile:125)
	at net.minecraft.server.MinecraftServer.bf(SourceFile:762)
	at net.minecraft.server.MinecraftServer.y(SourceFile:756)
	at auh.c(SourceFile:134)
	at net.minecraft.server.MinecraftServer.x(SourceFile:741)
	at net.minecraft.server.MinecraftServer.w(SourceFile:688)
	at net.minecraft.server.MinecraftServer.a(SourceFile:270)
	at java.base/java.lang.Thread.run(Thread.java:833)


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 7
	Minecraft Version ID: 1.18-pre7
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 17.0.1, Microsoft
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
	Memory: 499998536 bytes (476 MiB) / 2147483648 bytes (2048 MiB) up to 2147483648 bytes (2048 MiB)
	CPUs: 2
	Processor Vendor: AuthenticAMD
	Processor Name: AMD Athlon Silver 3050U with Radeon Graphics   
	Identifier: AuthenticAMD Family 23 Model 24 Stepping 1
	Microarchitecture: Zen / Zen+
	Frequency (GHz): 2.30
	Number of physical packages: 1
	Number of physical CPUs: 2
	Number of logical CPUs: 2
	Graphics card #0 name: AMD Radeon(TM) Graphics
	Graphics card #0 vendor: Advanced Micro Devices, Inc. (0x1002)
	Graphics card #0 VRAM (MB): 512.00
	Graphics card #0 deviceId: 0x15d8
	Graphics card #0 versionInfo: DriverVersion=27.20.15030.5001
	Memory slot #0 capacity (MB): 4096.00
	Memory slot #0 clockSpeed (GHz): 3.20
	Memory slot #0 type: DDR4
	Virtual memory max (MB): 11942.86
	Virtual memory used (MB): 8914.29
	Swap memory total (MB): 8442.84
	Swap memory used (MB): 1630.46
	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; [adj['MindIllusions'/147, l='ServerLevel[bug testing]', x=21.50, y=-321.56, z=0.50]]
	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