---- Minecraft Crash Report ----
// Ouch. That hurt :(

Time: 23/03/18 18.50
Description: Ticking entity

java.lang.ClassCastException: afn cannot be cast to afj
	at adb.a(SourceFile:41)
	at acz.a(SourceFile:22)
	at adl.a(SourceFile:94)
	at abw.cL(SourceFile:644)
	at abv.l(SourceFile:1895)
	at abw.l(SourceFile:504)
	at ajs.l(SourceFile:33)
	at aki.l(SourceFile:257)
	at abv.S_(SourceFile:1750)
	at abw.S_(SourceFile:284)
	at ajs.S_(SourceFile:38)
	at aki.S_(SourceFile:232)
	at ajg.S_(SourceFile:252)
	at aug.a(SourceFile:1617)
	at se.a(SourceFile:705)
	at aug.h(SourceFile:1593)
	at aug.p_(SourceFile:1475)
	at se.p_(SourceFile:538)
	at net.minecraft.server.MinecraftServer.w(SourceFile:702)
	at net.minecraft.server.MinecraftServer.v(SourceFile:627)
	at czd.v(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:532)
	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 adb.a(SourceFile:41)
	at acz.a(SourceFile:22)
	at adl.a(SourceFile:94)
	at abw.cL(SourceFile:644)
	at abv.l(SourceFile:1895)
	at abw.l(SourceFile:504)
	at ajs.l(SourceFile:33)
	at aki.l(SourceFile:257)
	at abv.S_(SourceFile:1750)
	at abw.S_(SourceFile:284)
	at ajs.S_(SourceFile:38)
	at aki.S_(SourceFile:232)
	at ajg.S_(SourceFile:252)
	at aug.a(SourceFile:1617)
	at se.a(SourceFile:705)
	at aug.h(SourceFile:1593)

-- Entity being ticked --
Details:
	Entity Type: minecraft:drowned (ajg)
	Entity ID: 1771
	Entity Name: Drowned
	Entity's Exact location: 2682,30, 18,01, -751,21
	Entity's Block location: World: (2682,18,-752), Chunk: (at 10,1,0 in 167,-47; contains blocks 2672,0,-752 to 2687,255,-737), Region: (5,-2; contains chunks 160,-64 to 191,-33, blocks 2560,0,-1024 to 3071,255,-513)
	Entity's Momentum: -0,12, 0,00, 0,01
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at aug.p_(SourceFile:1475)
	at se.p_(SourceFile:538)

-- Affected level --
Details:
	Level name: Snapshot 1.13
	All players: 1 total; [sg['Piccolofalco75'/1766, l='Snapshot 1.13', x=2681,70, y=16,00, z=-751,24]]
	Chunk stats: ServerChunkCache: 1850 Drop: 0
	Level seed: 6757035273625813537
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (22,64,-306), Chunk: (at 6,4,14 in 1,-20; contains blocks 16,0,-320 to 31,255,-305), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Level time: 2577586 game time, 3184790 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 93822 (now: false), thunder time: 52645 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.w(SourceFile:702)
	at net.minecraft.server.MinecraftServer.v(SourceFile:627)
	at czd.v(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:532)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 18w11a
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 781229392 bytes (745 MB) / 1191182336 bytes (1136 MB) up to 2147483648 bytes (2048 MB)
	JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [sg['Piccolofalco75'/1766, l='Snapshot 1.13', x=2681,70, y=16,00, z=-751,24]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.