Server Crash due to being inside Woodland Mansion

This is the crash report generated by my server. Entering the Woodland Mansion caused the server to crash immediately. After the server restarted, I joined the game and the server crashed again. I'm not sure what the issue is aside from the report mentioning new chunk generation but I even waited for close to 5 minutes before entering the mansion (taking screenshots etc.)

---- Minecraft Crash Report ----
// Who set us up the TNT?

Time: 9/6/18 8:14 PM
Description: Exception generating new chunk

java.util.concurrent.CompletionException: java.lang.ArrayIndexOutOfBoundsException: 16
	at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273)
	at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280)
	at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:604)
	at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
	at java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:443)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 16
	at bnq.a(SourceFile:87)
	at bnq.e(SourceFile:496)
	at ti.i(SourceFile:245)
	at ti.a(SourceFile:238)
	at bpj.a(SourceFile:29)
	at bpj.a(SourceFile:13)
	at buh.a(SourceFile:26)
	at buh.a(SourceFile:13)
	at bpm.a(SourceFile:27)
	at ayt.a(SourceFile:504)
	at bmy.a(SourceFile:113)
	at tr.a(SourceFile:12)
	at tq.a(SourceFile:35)
	at bnc.a(SourceFile:95)
	at tx.a(SourceFile:79)
	at tx.a(SourceFile:25)
	at acu$a.a(SourceFile:147)
	at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602)
	... 6 more


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

-- Head --
Thread: Server thread
Stacktrace:
	at tc.a(SourceFile:159)

-- Chunk to be generated --
Details:
	Location: 39,-394
	Position hash: -1692217114585
	Generator: bou@5f479d60
Stacktrace:
	at tc.a(SourceFile:159)
	at tc.a(SourceFile:124)
	at tk.a(SourceFile:87)
	at tl.c(SourceFile:123)
	at td.a(SourceFile:219)
	at net.minecraft.server.MinecraftServer.b(SourceFile:747)
	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(Thread.java:748)

-- Affected level --
Details:
	Level name: world
	All players: 1 total; [tf['Adam_Bryski'/716467, l='world', x=656.16, y=64.06, z=-6099.47]]
	Chunk stats: ServerChunkCache: 859 Drop: 0
	Level seed: 8693461162713511478
	Level generator: ID 03 - amplified, ver 0. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (240,80,224), Chunk: (at 0,5,0 in 15,14; contains blocks 240,0,224 to 255,255,239), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 28902311 game time, 31174291 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 131786 (now: false), thunder time: 47647 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false

-- System Details --
Details:
	Minecraft Version: 1.13.1
	Operating System: Linux (amd64) version 4.9.103-xxxx-std-ipv6-64
	Java Version: 1.8.0_171, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 877820776 bytes (837 MB) / 3150446592 bytes (3004 MB) up to 3150446592 bytes (3004 MB)
	JVM Flags: 4 total; -Xmx3072M -Xms1024M -XX:ParallelGCThreads=2 -XX:ThreadStackSize=512
	Profiler Position: N/A (disabled)
	Player Count: 1 / 60; [tf['Adam_Bryski'/716467, l='world', x=656.16, y=64.06, z=-6099.47]]
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)