---- Minecraft Crash Report ----
// Don't do that.

Time: 11/29/18 7:24 AM
Description: Exception ticking world

java.lang.AbstractMethodError: bxx$$Lambda$1057/2001170383.a(Lcom/mojang/datafixers/Dynamic;)Ljava/lang/Object;
	at yg.a(SourceFile:18)
	at cat.<init>(SourceFile:44)
	at bvl$a.<init>(SourceFile:29)
	at cax.a(SourceFile:86)
	at bqu.a(SourceFile:614)
	at bqu.a(SourceFile:229)
	at ui.d(SourceFile:439)
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
	at java.util.ArrayList.forEach(ArrayList.java:1249)
	at ui.e(SourceFile:369)
	at ui.a(SourceFile:272)
	at baq.a(SourceFile:261)
	at bxb.a(SourceFile:129)
	at bpx.a(SourceFile:108)
	at uj.a(SourceFile:808)
	at ru.a(SourceFile:48)
	at ru.p(SourceFile:27)
	at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:132)
	at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:72)
	at cb.a(SourceFile:221)
	at uz.c(SourceFile:1094)
	at uz.a(SourceFile:1081)
	at nc.a(SourceFile:37)
	at nc.a(SourceFile:9)
	at jq.a(SourceFile:15)
	at qo.run(SourceFile:18)
	at net.minecraft.server.MinecraftServer.q(SourceFile:654)
	at net.minecraft.server.MinecraftServer.p(SourceFile:625)
	at net.minecraft.server.MinecraftServer.run(SourceFile:584)
	at java.lang.Thread.run(Thread.java:745)


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

-- Head --
Thread: Server thread
Stacktrace:
	at yg.a(SourceFile:18)
	at cat.<init>(SourceFile:44)
	at bvl$a.<init>(SourceFile:29)
	at cax.a(SourceFile:86)
	at bqu.a(SourceFile:614)
	at bqu.a(SourceFile:229)
	at ui.d(SourceFile:439)
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
	at java.util.ArrayList.forEach(ArrayList.java:1249)
	at ui.e(SourceFile:369)
	at ui.a(SourceFile:272)
	at baq.a(SourceFile:261)
	at bxb.a(SourceFile:129)
	at bpx.a(SourceFile:108)
	at uj.a(SourceFile:808)
	at ru.a(SourceFile:48)
	at ru.p(SourceFile:27)
	at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:132)
	at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:72)
	at cb.a(SourceFile:221)
	at uz.c(SourceFile:1094)
	at uz.a(SourceFile:1081)
	at nc.a(SourceFile:37)
	at nc.a(SourceFile:9)
	at jq.a(SourceFile:15)

-- Affected level --
Details:
	Level name: 18w48a
	All players: 1 total; [ul['111foxman111'/700, l='18w48a', x=23.82, y=64.00, z=231.26]]
	Chunk stats: ServerChunkCache: 2818
	Level seed: 1217618454632373399
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (48,79,192), Chunk: (at 0,4,0 in 3,12; contains blocks 48,0,192 to 63,255,207), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 1118 game time, 1118 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 146608 (now: false), thunder time: 159696 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:782)
	at net.minecraft.server.MinecraftServer.a(SourceFile:716)
	at dog.a(SourceFile:128)
	at net.minecraft.server.MinecraftServer.run(SourceFile:582)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 18w48a
	Operating System: Mac OS X (x86_64) version 10.13.6
	Java Version: 1.8.0_74, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 1657396064 bytes (1580 MB) / 2617245696 bytes (2496 MB) up to 3221225472 bytes (3072 MB)
	JVM Flags: 8 total; -Xss1M -Xmx3G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	Player Count: 1 / 8; [ul['111foxman111'/700, l='18w48a', x=23.82, y=64.00, z=231.26]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.