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

Time: 2020/8/6 上午10:08
Description: Ticking player

java.lang.IllegalStateException: Unregistered biome
	at bw.b(SourceFile:88)
	at java.base/java.util.Optional.orElseThrow(Optional.java:385)
	at bw.a(SourceFile:88)
	at bw.a(SourceFile:68)
	at bx$a.a(SourceFile:55)
	at bx.a(SourceFile:31)
	at ck.a(SourceFile:62)
	at bx.a(SourceFile:31)
	at aah.v_(SourceFile:484)
	at aay.b(SourceFile:207)
	at nd.a(SourceFile:234)
	at aax.c(SourceFile:173)
	at net.minecraft.server.MinecraftServer.b(SourceFile:881)
	at net.minecraft.server.MinecraftServer.a(SourceFile:810)
	at emy.a(SourceFile:92)
	at net.minecraft.server.MinecraftServer.w(SourceFile:669)
	at net.minecraft.server.MinecraftServer.a(SourceFile:254)
	at java.base/java.lang.Thread.run(Thread.java:844)


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

-- Head --
Thread: Server thread
Stacktrace:
	at bw.b(SourceFile:88)
	at java.base/java.util.Optional.orElseThrow(Optional.java:385)
	at bw.a(SourceFile:88)
	at bw.a(SourceFile:68)
	at bx$a.a(SourceFile:55)
	at bx.a(SourceFile:31)
	at ck.a(SourceFile:62)
	at bx.a(SourceFile:31)

-- Player being ticked --
Details:
	Entity Type: minecraft:player (aah)
	Entity ID: 1446
	Entity Name: Eatmeloncat
	Entity's Exact location: -75.50, 4.00, -123.50
	Entity's Block location: World: (-76,4,-124), Chunk: (at 4,0,4 in -5,-8; contains blocks -80,0,-128 to -65,255,-113), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Entity's Momentum: 0.00, -0.08, 0.00
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at aah.v_(SourceFile:484)
	at aay.b(SourceFile:207)
	at nd.a(SourceFile:234)
	at aax.c(SourceFile:173)
	at net.minecraft.server.MinecraftServer.b(SourceFile:881)
	at net.minecraft.server.MinecraftServer.a(SourceFile:810)
	at emy.a(SourceFile:92)
	at net.minecraft.server.MinecraftServer.w(SourceFile:669)
	at net.minecraft.server.MinecraftServer.a(SourceFile:254)
	at java.base/java.lang.Thread.run(Thread.java:844)

-- System Details --
Details:
	Minecraft Version: 1.16.2 Pre-release 2
	Minecraft Version ID: 1.16.2-pre2
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 9.0.4, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 1599328184 bytes (1525 MB) / 2493513728 bytes (2378 MB) up to 3221225472 bytes (3072 MB)
	CPUs: 8
	JVM Flags: 6 total; -XX:+UseG1GC -XX:-UseAdaptiveSizePolicy -XX:-OmitStackTraceInFastThrow -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmn256m -Xmx3072m
	Player Count: 1 / 8; [aah['Eatmeloncat'/1446, l='ServerLevel[新的世界]', x=-75.50, y=4.00, z=-123.50]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.