Server crashes on interaction with entity

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 9/5/18 9:49 AM
Description: Ticking entity

java.lang.ArrayIndexOutOfBoundsException: 38
	at java.util.RegularEnumSet$EnumSetIterator.next(Unknown Source)
	at java.util.RegularEnumSet$EnumSetIterator.next(Unknown Source)
	at cbi.a(SourceFile:300)
	at aiv.a(SourceFile:205)
	at aiv.a(SourceFile:131)
	at aiw.o(SourceFile:266)
	at aiw.d(SourceFile:202)
	at afb.cM(SourceFile:634)
	at afa.k(SourceFile:1968)
	at afb.k(SourceFile:495)
	at anf.k(SourceFile:35)
	at afa.R_(SourceFile:1819)
	at afb.R_(SourceFile:279)
	at anf.R_(SourceFile:40)
	at ams.R_(SourceFile:155)
	at axx.a(SourceFile:1243)
	at td.a(SourceFile:575)
	at axx.g(SourceFile:1218)
	at axx.o_(SourceFile:1100)
	at td.o_(SourceFile:491)
	at net.minecraft.server.MinecraftServer.b(SourceFile:755)
	at so.b(SourceFile:360)
	at net.minecraft.server.MinecraftServer.a(SourceFile:681)
	at net.minecraft.server.MinecraftServer.run(SourceFile:584)
	at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Server thread
Stacktrace:
	at java.util.RegularEnumSet$EnumSetIterator.next(Unknown Source)
	at java.util.RegularEnumSet$EnumSetIterator.next(Unknown Source)
	at cbi.a(SourceFile:300)
	at aiv.a(SourceFile:205)
	at aiv.a(SourceFile:131)
	at aiw.o(SourceFile:266)
	at aiw.d(SourceFile:202)
	at afb.cM(SourceFile:634)
	at afa.k(SourceFile:1968)
	at afb.k(SourceFile:495)
	at anf.k(SourceFile:35)
	at afa.R_(SourceFile:1819)
	at afb.R_(SourceFile:279)
	at anf.R_(SourceFile:40)
	at ams.R_(SourceFile:155)
	at axx.a(SourceFile:1243)
	at td.a(SourceFile:575)
	at axx.g(SourceFile:1218)

-- Entity being ticked --
Details:
	Entity Type: minecraft:creeper (ams)
	Entity ID: 984
	Entity Name: Creeper
	Entity's Exact location: 80.50, 30.00, -20.47
	Entity's Block location: World: (80,30,-21), Chunk: (at 0,1,11 in 5,-2; contains blocks 80,0,-32 to 95,255,-17), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Entity's Momentum: 0.00, -0.08, 0.05
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at axx.o_(SourceFile:1100)
	at td.o_(SourceFile:491)

-- Affected level --
Details:
	Level name: world
	All players: 1 total; [tf['TRU_IT_Guy'/704, l='world', x=126.50, y=76.00, z=-64.50]]
	Chunk stats: ServerChunkCache: 264 Drop: 0
	Level seed: 646944704
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (128,77,-64), Chunk: (at 0,4,0 in 8,-4; contains blocks 128,0,-64 to 143,255,-49), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Level time: 7320 game time, 7320 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 150893 (now: false), thunder time: 6789 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:755)
	at so.b(SourceFile:360)
	at net.minecraft.server.MinecraftServer.a(SourceFile:681)
	at net.minecraft.server.MinecraftServer.run(SourceFile:584)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.13.1
	Operating System: Windows Server 2016 (amd64) version 10.0
	Java Version: 1.8.0_181, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 1636044208 bytes (1560 MB) / 2032664576 bytes (1938 MB) up to 2032664576 bytes (1938 MB)
	JVM Flags: 2 total; -Xmx2048M -Xms2048M
	Profiler Position: N/A (disabled)
	Player Count: 1 / 20; [tf['TRU_IT_Guy'/704, l='world', x=126.50, y=76.00, z=-64.50]]
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)