entering a base with too many entities crashes my game (Not sure if bug)

We do not have enough information to find the cause of this issue.

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Here ya go

Minecraft Crash Report ----
// Shall we play a game?

Time: 2/23/19 2:52 PM
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
at ahw.a(SourceFile:1049)
at ahw.dD(SourceFile:1038)
at aic.dD(SourceFile:35)
at ahw.h(SourceFile:289)
at anu.h(SourceFile:220)
at uv.a(SourceFile:565)
at uv$$Lambda$2583/156681551.accept(Unknown Source)
at bdf.a(SourceFile:683)
at uv.a(SourceFile:368)
at net.minecraft.server.MinecraftServer.b(SourceFile:837)
at net.minecraft.server.MinecraftServer.a(SourceFile:776)
at dtd.a(SourceFile:128)
at net.minecraft.server.MinecraftServer.run(SourceFile:634)
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 ahw.a(SourceFile:1049)
at ahw.dD(SourceFile:1038)
at aic.dD(SourceFile:35)
at ahw.h(SourceFile:289)
at anu.h(SourceFile:220)
at uv.a(SourceFile:565)
at uv$$Lambda$2583/156681551.accept(Unknown Source)

– Entity being ticked –
Details:
Entity Type: minecraft:wolf (anu)
Entity ID: 283
Entity Name: Wolf
Entity's Exact location: -194.30, 55.00, 133.93
Entity's Block location: World: (-195,55,133), Chunk: (at 13,3,5 in -13,8; contains blocks -208,0,128 to -193,255,143), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Entity's Momentum: 0.00, -0.08, 0.00
Entity's Passengers: []
Entity's Vehicle: ~_ERROR~ NullPointerException: null
Stacktrace:
at bdf.a(SourceFile:683)
at uv.a(SourceFile:368)

– Affected level –
Details:
Level name: SNAPSHOT SURVIVAL
All players: 1 total; [uw['KittenPlaysGames'/397, l='SNAPSHOT SURVIVAL', x=-414.01, y=90.62, z=56.77]]
Chunk stats: ServerChunkCache: 3422
Level seed: 430178010587838641
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options: {}
Level spawn location: World: (-96,64,-16), Chunk: (at 0,4,0 in -6,-1; contains blocks -96,0,-16 to -81,255,-1), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
Level time: 58643867 game time, 20158148 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 89671 (now: false), thunder time: 22004 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
at net.minecraft.server.MinecraftServer.b(SourceFile:837)
at net.minecraft.server.MinecraftServer.a(SourceFile:776)
at dtd.a(SourceFile:128)
at net.minecraft.server.MinecraftServer.run(SourceFile:634)
at java.lang.Thread.run(Thread.java:745)

– System Details –
Details:
Minecraft Version: 19w08b
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Ser

Duplicate of MC-143404.