---- Minecraft Crash Report ----
// There are four lights!

Time: 12/14/19 10:26 PM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
	at java.util.LinkedList$ListItr.next(LinkedList.java:893)
	at com.google.common.collect.Iterators$8.next(Iterators.java:896)
	at com.google.common.collect.Iterators.addAll(Iterators.java:367)
	at com.google.common.collect.Lists.newArrayList(Lists.java:165)
	at zk.a(SourceFile:214)
	at zk.c(SourceFile:198)
	at zk.a(SourceFile:146)
	at bxf.b(SourceFile:124)
	at bxf.f(SourceFile:108)
	at bxf.a(SourceFile:104)
	at bta.a(SourceFile:45)
	at bcm.a(SourceFile:81)
	at bcm.a(SourceFile:41)
	at bek.a(SourceFile:194)
	at dno.a(SourceFile:327)
	at dbl.aE(SourceFile:1321)
	at dbl.aF(SourceFile:1556)
	at dbl.n(SourceFile:1403)
	at dbl.d(SourceFile:922)
	at dbl.b(SourceFile:585)
	at net.minecraft.client.main.Main.main(SourceFile:202)


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

-- Head --
Thread: Render thread
Stacktrace:
	at java.util.LinkedList$ListItr.next(LinkedList.java:893)
	at com.google.common.collect.Iterators$8.next(Iterators.java:896)
	at com.google.common.collect.Iterators.addAll(Iterators.java:367)
	at com.google.common.collect.Lists.newArrayList(Lists.java:165)
	at zk.a(SourceFile:214)
	at zk.c(SourceFile:198)
	at zk.a(SourceFile:146)
	at bxf.b(SourceFile:124)
	at bxf.f(SourceFile:108)
	at bxf.a(SourceFile:104)
	at bta.a(SourceFile:45)
	at bcm.a(SourceFile:81)
	at bcm.a(SourceFile:41)
	at bek.a(SourceFile:194)
	at dno.a(SourceFile:327)
	at dbl.aE(SourceFile:1321)
	at dbl.aF(SourceFile:1556)

-- Affected level --
Details:
	All players: 1 total; [dpy['dw6561'/9031, l='MpServer', x=170.98, y=56.00, z=-164.32]]
	Chunk stats: Client Chunk Cache: 841, 594
	Level dimension: minecraft:overworld
	Level name: MpServer
	Level seed: -5051657280224168388
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: {}
	Level spawn location: World: (232,55,-216), Chunk: (at 8,3,8 in 14,-14; contains blocks 224,0,-224 to 239,255,-209), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Level time: 105001 game time, 105001 day time
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at dnl.a(SourceFile:450)
	at dbl.c(SourceFile:1878)
	at dbl.b(SourceFile:605)
	at net.minecraft.client.main.Main.main(SourceFile:202)

-- System Details --
Details:
	Minecraft Version: 1.15.1 Pre-release 1
	Minecraft Version ID: 1.15.1-pre1
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 605399536 bytes (577 MB) / 1979711488 bytes (1888 MB) up to 2147483648 bytes (2048 MB)
	CPUs: 12
	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
	Launched Version: 1.15.1-pre1
	Backend library: LWJGL version 3.2.2 build 10
	Backend API: GeForce GTX 1660 Ti with Max-Q Design/PCIe/SSE2 GL version 4.6.0 NVIDIA 419.71, NVIDIA Corporation
	GL Caps: Using framebuffer using OpenGL 3.0
	Using VBOs: Yes
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: 
	Current Language: English (US)
	CPU: 12x Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz