---- Minecraft Crash Report ----
// My bad.

Time: 28.02.21 16:43
Description: Exception initializing level

java.lang.ArrayIndexOutOfBoundsException: -1
	at ckf.b(SourceFile:62)
	at cnl.a(SourceFile:444)
	at cnl.b(SourceFile:370)
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(Unknown Source)
	at java.util.concurrent.CompletableFuture$AsyncSupply.exec(Unknown Source)
	at java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(Unknown Source)
	at java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
	at java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)


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

-- Head --
Thread: Server thread
Stacktrace:
	at ckf.b(SourceFile:62)
	at cnl.a(SourceFile:444)
	at cnl.b(SourceFile:370)

-- Affected level --
Details:
	All players: 0 total; []
	Chunk stats: 529
	Level dimension: minecraft:overworld
	Level spawn location: World: (-200,64,-88), Section: (at 8,0,8 in -13,4,-6; chunk contains blocks -208,-64,-96 to -193,319,-81), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,-64,-512 to -1,319,-1)
	Level time: 0 game time, 0 day time
	Level name: New World
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Known server brands: vanilla
	Level was modded: false
	Level storage version: 0x04ABD - Anvil
Stacktrace:
	at net.minecraft.server.MinecraftServer.a(SourceFile:387)
	at net.minecraft.server.MinecraftServer.l_(SourceFile:336)
	at ewa.d(SourceFile:69)
	at net.minecraft.server.MinecraftServer.w(SourceFile:647)
	at net.minecraft.server.MinecraftServer.a(SourceFile:259)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 21w08b
	Minecraft Version ID: 21w08b
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_281, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 2030949160 bytes (1936 MB) / 3791650816 bytes (3616 MB) up to 4294967296 bytes (4096 MB)
	CPUs: 8
	JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	Player Count: 0 / 8; []
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.