---- Minecraft Crash Report ----
// I feel sad now :(Time: 11/29/18 12:45 PM
Description: Ticking entityjava.lang.AbstractMethodError: bxx$$Lambda$1063/1887459401.a(Lcom/mojang/datafixers/Dynamic;)Ljava/lang/Object;
    at yg.a(SourceFile:18)
    at cat.<init>(SourceFile:44)
    at bvl$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$AsyncSupply.run(CompletableFuture.java:1590)
    at java.util.ArrayList.forEach(ArrayList.java:1249)
    at ui.e(SourceFile:369)
    at ui.a(SourceFile:272)
    at bqa.a(SourceFile:14)
    at baq.a(SourceFile:1742)
    at akk.a(SourceFile:84)
    at aip.a(SourceFile:94)
    at ags.cR(SourceFile:601)
    at agr.k(SourceFile:2031)
    at ags.k(SourceFile:474)
    at aph.k(SourceFile:36)
    at aow.k(SourceFile:198)
    at agr.U_(SourceFile:1882)
    at ags.U_(SourceFile:285)
    at aph.U_(SourceFile:41)
    at baq.a(SourceFile:1165)
    at uj.a(SourceFile:395)
    at baq.g(SourceFile:1145)
    at baq.m_(SourceFile:1027)
    at uj.m_(SourceFile:311)
    at net.minecraft.server.MinecraftServer.b(SourceFile:787)
    at net.minecraft.server.MinecraftServer.a(SourceFile:716)
    at dog.a(SourceFile:128)
    at net.minecraft.server.MinecraftServer.run(SourceFile:582)
    at java.lang.Thread.run(Thread.java:745)
A detailed walkthrough of the error, its code path and all known details is as follows:
----------------------------------------------------------------------------------------- Head --
Thread: Server thread
Stacktrace:
    at yg.a(SourceFile:18)
    at cat.<init>(SourceFile:44)
    at bvl$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 bqa.a(SourceFile:14)
    at baq.a(SourceFile:1742)
    at akk.a(SourceFile:84)
    at aip.a(SourceFile:94)
    at ags.cR(SourceFile:601)
    at agr.k(SourceFile:2031)
    at ags.k(SourceFile:474)
    at aph.k(SourceFile:36)
    at aow.k(SourceFile:198)
    at agr.U_(SourceFile:1882)
    at ags.U_(SourceFile:285)
    at aph.U_(SourceFile:41)
    at baq.a(SourceFile:1165)
    at uj.a(SourceFile:395)
    at baq.g(SourceFile:1145)-- Entity being ticked --
Details:
    Entity Type: minecraft:enderman (aow)
    Entity ID: 48132
    Entity Name: Enderman
    Entity's Exact location: -936.50, 64.00, -415.50
    Entity's Block location: World: (-937,64,-416), Chunk: (at 7,4,0 in -59,-26; contains blocks -944,0,-416 to -929,255,-401), Region: (-2,-1; contains chunks -64,-32 to -33,-1, blocks -1024,0,-512 to -513,255,-1)
    Entity's Momentum: 0.00, -0.08, 0.00
    Entity's Passengers: []
    Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
    at baq.m_(SourceFile:1027)
    at uj.m_(SourceFile:311)-- Affected level --
Details:
    Level name: Plains
    All players: 1 total; [ul['RedstoneTARDIS42'/24711, l='Plains', x=-921.95, y=100.17, z=-507.73]]
    Chunk stats: ServerChunkCache: 3867
    Level seed: 6860551933019121950
    Level generator: ID 05 - buffet, ver 0. Features enabled: true
    Level generator options: {biome_source:{options:{biomes:["minecraft:plains"]},type:"minecraft:fixed"},chunk_generator:{options:{default_fluid:"minecraft:water",default_block:"minecraft:stone"},type:"minecraft:surface"}}
    Level spawn location: World: (-160,63,-16), Chunk: (at 0,3,0 in -10,-1; contains blocks -160,0,-16 to -145,255,-1), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
    Level time: 15482 game time, 15482 day time
    Level dimension: 0
    Level storage version: 0x04ABD - Anvil
    Level weather: Rain time: 124333 (now: false), thunder time: 123537 (now: false)
    Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
    at net.minecraft.server.MinecraftServer.b(SourceFile:787)
    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 10.14
    Java Version: 1.8.0_74, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1146239432 bytes (1093 MB) / 1946157056 bytes (1856 MB) up to 2147483648 bytes (2048 MB)
    JVM Flags: 8 total; -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
    Player Count: 1 / 8; [ul['RedstoneTARDIS42'/24711, l='Plains', x=-921.95, y=100.17, z=-507.73]]
    Data Packs: vanilla
    Type: Integrated Server (map_client.txt)
    Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.