Trading Llama causes Ticking Entity Crash Consistently

When 1 of my players joins the game, they are located near a trade llama which causes the server to crash every time they join.

19w07a\: [^crash-2019-02-14_21.22.41-server.txt]

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

Time: 2/14/19 9:22 PM
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
	at ahv.a(SourceFile:1008)
	at ahv.dr(SourceFile:997)
	at aib.dr(SourceFile:70)
	at ahv.h(SourceFile:287)
	at anu.h(SourceFile:588)
	at aoc.h(SourceFile:83)
	at bdb.a(SourceFile:647)
	at uu.a(SourceFile:652)
	at uu.k_(SourceFile:449)
	at net.minecraft.server.MinecraftServer.b(SourceFile:844)
	at tw.b(SourceFile:342)
	at net.minecraft.server.MinecraftServer.a(SourceFile:775)
	at net.minecraft.server.MinecraftServer.run(SourceFile:633)
	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 ahv.a(SourceFile:1008)
	at ahv.dr(SourceFile:997)
	at aib.dr(SourceFile:70)
	at ahv.h(SourceFile:287)
	at anu.h(SourceFile:588)
	at aoc.h(SourceFile:83)
	at bdb.a(SourceFile:647)
	at uu.a(SourceFile:652)

-- Entity being ticked --
Details:
	Entity Type: minecraft:trader_llama (aoc)
	Entity ID: 8598
	Entity Name: Trader Llama
	Entity's Exact location: -14799.72, 90.00, 140.27
	Entity's Block location: World: (-14800,90,140), Chunk: (at 0,5,12 in -925,8; contains blocks -14800,0,128 to -14785,255,143), Region: (-29,0; contains chunks -928,0 to -897,31, blocks -14848,0,0 to -14337,255,511)
	Entity's Momentum: 0.00, -0.08, 0.00
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at uu.k_(SourceFile:449)

-- Affected level --
Details:
	Level name: world
	All players: 2 total; [uv['BlueSteelAU'/131, l='world', x=305.04, y=76.00, z=-144.91], uv['jasper_jermaine'/8595, l='world', x=-14807.81, y=90.00, z=134.26]]
	Chunk stats: ServerChunkCache: 3721
	Level seed: -56928417811904999
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (0,78,0), Chunk: (at 0,4,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 81847848 game time, 73701643 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 102636 (now: false), thunder time: 60107 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:844)
	at tw.b(SourceFile:342)
	at net.minecraft.server.MinecraftServer.a(SourceFile:775)
	at net.minecraft.server.MinecraftServer.run(SourceFile:633)
	at java.lang.Thread.run(Thread.java:748)

-- System Details --
Details:
	Minecraft Version: 19w07a
	Operating System: Linux (amd64) version 4.13.0-46-generic
	Java Version: 1.8.0_181, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 11837052408 bytes (11288 MB) / 16042164224 bytes (15299 MB) up to 19088801792 bytes (18204 MB)
	JVM Flags: 2 total; -Xmx20480M -Xms8096M
	Player Count: 2 / 15; [uv['BlueSteelAU'/131, l='world', x=305.04, y=76.00, z=-144.91], uv['jasper_jermaine'/8595, l='world', x=-14807.81, y=90.00, z=134.26]]
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)