Game crashed whilst ticking entity

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 anw.h(SourceFile:573)
	at aod.h(SourceFile:83)
	at uv.a(SourceFile:565)
	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 anw.h(SourceFile:573)
	at aod.h(SourceFile:83)
	at uv.a(SourceFile:565)

-- Entity being ticked --
Details:
	Entity Type: minecraft:trader_llama (aod)
	Entity ID: 96
	Entity Name: Llama ambulante
	Entity's Exact location: -855.50, 67.00, 372.44
	Entity's Block location: World: (-856,67,372), Chunk: (at 8,4,4 in -54,23; contains blocks -864,0,368 to -849,255,383), Region: (-2,0; contains chunks -64,0 to -33,31, blocks -1024,0,0 to -513,255,511)
	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: ENELSMADLH_1
	All players: 1 total; [uw['JanireR30'/87, l='ENELSMADLH_1', x=-839.15, y=70.00, z=381.44]]
	Chunk stats: ServerChunkCache: 3114
	Level seed: 5322602735514886292
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (220,64,10), Chunk: (at 12,4,10 in 13,0; contains blocks 208,0,0 to 223,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 3811626 game time, 3002565 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 35917 (now: false), thunder time: 5684 (now: true)
	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)