Server crashed, Sponge 1.10.2

Version: 1.10.2
Forge Mod Loader version 12.18.3.2297
spongeforge-1.10.2-2281-5.2.0-BETA-2353.jar
Mods: CustomNPCs, Mo’Creatures. CustomMobSpawner

---- Minecraft Crash Report ----

WARNING: coremods are present:
  SpongeCoremod (spongeforge-1.10.2-2281-5.2.0-BETA-2353.jar)
Contact their authors BEFORE contacting forge

// Would you like a cupcake?

Time: 6/15/17 2:40 PM
Description: Exception ticking world

java.util.concurrent.RejectedExecutionException: Task net.minecraft.world.WorldServer$$Lambda$534/16508375@30238e01 rejected from java.util.concurrent.ThreadPoolExecutor@41c9510c[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 25614]
	at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)
	at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)
	at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369)
	at java.util.concurrent.Executors$DelegatedExecutorService.execute(Executors.java:668)
	at net.minecraft.world.WorldServer.updateLightAsync(WorldServer.java:3926)
	at net.minecraft.world.WorldServer.func_180500_c(WorldServer.java:3751)
	at net.minecraft.world.World.func_175664_x(World.java:2776)
	at net.minecraft.world.WorldServer.func_184162_i(WorldServer.java:360)
	at net.minecraft.world.WorldServer.func_147456_g(WorldServer.java:1917)
	at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:220)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:698)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
	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 java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)
	at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)
	at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369)
	at java.util.concurrent.Executors$DelegatedExecutorService.execute(Executors.java:668)
	at net.minecraft.world.WorldServer.updateLightAsync(WorldServer.java:3926)
	at net.minecraft.world.WorldServer.func_180500_c(WorldServer.java:3751)
	at net.minecraft.world.World.func_175664_x(World.java:2776)
	at net.minecraft.world.WorldServer.func_184162_i(WorldServer.java:360)
	at net.minecraft.world.WorldServer.func_147456_g(WorldServer.java:1917)
	at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:220)

-- Affected level --
Details:
	Level name: rpgtest
	All players: 5 total; [EntityPlayerMP['kasdo'/2348, l='rpgtest', x=-343.95, y=97.31, z=-900.65], EntityPlayerMP['Honf'/2549, l='rpgtest', x=-463.40, y=90.00, z=-772.44], EntityPlayerMP['dixnos'/3284, l='rpgtest', x=-339.36, y=92.08, z=-869.28], EntityPlayerMP['Arimesti'/27396, l='rpgtest', x=-698.52, y=90.26, z=-786.40], EntityPlayerMP['Niblic'/257554, l='rpgtest', x=-309.34, y=102.53, z=-950.01]]
	Chunk stats: ServerChunkCache: 565 Drop: 0
	Level seed: 1781960996715884571
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-295,87,-961), Chunk: (at 9,5,15 in -19,-61; contains blocks -304,0,-976 to -289,255,-961), Region: (-1,-2; contains chunks -32,-64 to -1,-33, blocks -512,0,-1024 to -1,255,-513)
	Level time: 11303671 game time, 7368 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 1 (now: false), thunder time: 1 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:698)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
	at java.lang.Thread.run(Thread.java:748)

-- System Details --
Details:
	Minecraft Version: 1.10.2
	Operating System: Linux (amd64) version 3.16.0-4-amd64
	Java Version: 1.8.0_131, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 4284551816 bytes (4086 MB) / 5545394176 bytes (5288 MB) up to 5726797824 bytes (5461 MB)
	JVM Flags: 2 total; -Xms3072M -Xmx6144M
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	FML: MCP 9.32 Powered by Forge 12.18.3.2297 22 mods loaded, 22 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	UCHIJAAAA	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
	UCHIJAAAA	FML{8.0.99.99} [Forge Mod Loader] (zeron.jar) 
	UCHIJAAAA	Forge{12.18.3.2297} [Minecraft Forge] (zeron.jar) 
	UCHIJAAAA	spongeapi{5.2.0-SNAPSHOT-a26c654} [SpongeAPI] (minecraft.jar) 
	UCHIJAAAA	sponge{1.10.2-2281-5.2.0-BETA-2353} [SpongeForge] (spongeforge-1.10.2-2281-5.2.0-BETA-2353.jar) 
	UCHIJAAAA	coloredtablist{0.94SPO} [ColoredTablist] (coloredtablist.jar) 
	UCHIJAAAA	customspawner{3.10.1} [DrZhark's CustomSpawner] (CustomMobSpawner 3.10.1.jar) 
	UCHIJAAAA	customnpcs{1.10.2} [CustomNPCs] (CustomNPCs.jar) 
	UCHIJAAAA	mocreatures{10.0.6} [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod-10.0.6.jar) 
	UCHIJAAAA	io.github.hsyyid.essentialcmds{@project.informativeVersion@} [EssentialCmds] (EssentialCmds-1.10.2-8.1.14-universal.jar) 
	UCHIJAAAA	holograms{2.2} [Holograms] (holograms-2.2.jar) 
	UCHIJAAAA	permissionsex{2.0-SNAPSHOT-b147} [PermissionsEx] (permissionsex-sponge-2.0-SNAPSHOT-shaded.jar) 
	UCHIJAAAA	pixelautomessages{1.0.2} [PixelAutoMessages] (PixelAutoMessages-1.0.2-b11.jar) 
	UCHIJAAAA	placeholderapi{3.11} [PlaceholderAPI] (PlaceholderAPI-3.11.jar) 
	UCHIJAAAA	pjc{0.1.0} [Project Core] (project.core-6.1.0-0.1.0.jar) 
	UCHIJAAAA	pjw{0.12.0} [Project Worlds] (project.worlds-6.1.0-0.12.0.jar) 
	UCHIJAAAA	pjp{0.13.6} [ProjectPortals] (projectportals-5.1.0-0.13.6.jar) 
	UCHIJAAAA	redprotect{7.2.0} [RedProtect] (RedProtect-Sponge-6.1.0-7.2.0-b106.jar) 
	UCHIJAAAA	totaleconomy{1.5.3} [Total Economy] (TotalEconomy-v1.5.3.jar) 
	UCHIJAAAA	twentyticks{1.1.0} [Twenty Ticks] (twentyticks.jar) 
	UCHIJAAAA	voxelsniper{8.4.0-SNAPSHOT} [VoxelSniper] (VoxelSniper-8.4.0-SNAPSHOT.jar) 
	UCHIJAAAA	worldedit{6.1.5-SNAPSHOT} [WorldEdit] (worldedit-sponge-mc1.10.2-6.1.5-SNAPSHOT-dist.jar) 
	Loaded coremods (and transformers): 
SpongeCoremod (spongeforge-1.10.2-2281-5.2.0-BETA-2353.jar)
  org.spongepowered.common.launch.transformer.SpongeSuperclassTransformer
	Profiler Position: N/A (disabled)
	Player Count: 5 / 100; [EntityPlayerMP['kasdo'/2348, l='rpgtest', x=-343.95, y=97.31, z=-900.65], EntityPlayerMP['Honf'/2549, l='rpgtest', x=-463.40, y=90.00, z=-772.44], EntityPlayerMP['dixnos'/3284, l='rpgtest', x=-339.36, y=92.08, z=-869.28], EntityPlayerMP['Arimesti'/27396, l='rpgtest', x=-698.52, y=90.26, z=-786.40], EntityPlayerMP['Niblic'/257554, l='rpgtest', x=-309.34, y=102.53, z=-950.01]]
	Is Modded: Definitely; Server brand changed to 'fml,forge,sponge'
	Type: Dedicated Server (map_server.txt)

I suggest you remove TwentyTicks for a start. It’s been Discontinued. So has EssentialCmds.

But its not fixed my error

The error report you posted above isn’t very informative, so that’s all I could sensibly suggest.
The latest forge server log file would probably be more useful, and might help work out what went wrong.