Minecraft 18W48A - server crash

---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 11/29/18 3:17 PM
Description: Exception ticking world

java.lang.AbstractMethodError: bxx$$Lambda$1169/1881716172.a(Lcom/mojang/datafixers/Dynamic;)Ljava/lang/Object;
	at yg.a(SourceFile:18)
	at cat.<init>(SourceFile:44)
	at bvl$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:1257)
	at ui.e(SourceFile:369)
	at net.minecraft.server.MinecraftServer.q(SourceFile:641)
	at net.minecraft.server.MinecraftServer.p(SourceFile:625)
	at net.minecraft.server.MinecraftServer.run(SourceFile:584)
	at java.lang.Thread.run(Thread.java:748)


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:1257)

-- Affected level --
Details:
	Level name: world
	All players: 1 total; [ul['Momibelle'/38, l='world', x=-6256.16, y=71.00, z=-1124.01]]
	Chunk stats: ServerChunkCache: 3546
	Level seed: 8885681254330917499
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (-192,65,-144), Chunk: (at 0,4,0 in -12,-9; contains blocks -192,0,-144 to -177,255,-129), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Level time: 61188956 game time, 18186572 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 30027 (now: false), thunder time: 12168 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:782)
	at tn.b(SourceFile:337)
	at net.minecraft.server.MinecraftServer.a(SourceFile:716)
	at net.minecraft.server.MinecraftServer.run(SourceFile:582)
	at java.lang.Thread.run(Thread.java:748)

-- System Details --
Details:
	Minecraft Version: 18w48a
	Operating System: Linux (amd64) version 4.4.0-96-generic
	Java Version: 1.8.0_152, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 4565795448 bytes (4354 MB) / 5949620224 bytes (5674 MB) up to 5949620224 bytes (5674 MB)
	JVM Flags: 2 total; -Xmx6144M -Xms6144M
	Player Count: 1 / 120; [ul['Momibelle'/38, l='world', x=-6256.16, y=71.00, z=-1124.01]]
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)