servershops crash

---- Minecraft Crash Report ----

WARNING: coremods are present:
  SpongeCoremod (spongeforge-1.10.2-2092-5.0.0-BETA-1758.jar)
Contact their authors BEFORE contacting forge

// I'm sorry, Dave.

Time: 9/28/16 10:10 PM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: Could not initialize class me.nentify.servershops.data.ServerShopKeys
	at me.nentify.servershops.data.ServerShopData.toContainer(ServerShopData.java:113)
	at org.spongepowered.common.data.util.DataUtil.getSerializedManipulatorList(DataUtil.java:112)
	at net.minecraft.tileentity.TileEntity.writeToNbt(TileEntity.java:253)
	at net.minecraft.tileentity.TileEntity.handler$onWriteToNBT$0(TileEntity.java:200)
	at net.minecraft.tileentity.TileEntity.func_189515_b(TileEntity.java)
	at net.minecraft.tileentity.TileEntitySign.func_189515_b(TileEntitySign.java:33)
	at net.minecraft.world.chunk.storage.AnvilChunkLoader.func_75820_a(AnvilChunkLoader.java:384)
	at net.minecraft.world.chunk.storage.AnvilChunkLoader.func_75816_a(AnvilChunkLoader.java:175)
	at net.minecraft.world.gen.ChunkProviderServer.func_73242_b(ChunkProviderServer.java:199)
	at net.minecraft.world.gen.ChunkProviderServer.func_186027_a(ChunkProviderServer.java:227)
	at net.minecraft.world.WorldServer.func_73044_a(WorldServer.java:1012)
	at org.spongepowered.common.world.WorldManager.saveWorld(WorldManager.java:512)
	at net.minecraft.server.MinecraftServer.func_71267_a(MinecraftServer.java:636)
	at net.minecraft.server.MinecraftServer.constant$getSaveTickInterval$0(MinecraftServer.java:591)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:632)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
	at java.lang.Thread.run(Unknown Source)


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

-- System Details --
Details:
	Minecraft Version: 1.10.2
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_101, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 979658968 bytes (934 MB) / 3532128256 bytes (3368 MB) up to 4705484800 bytes (4487 MB)
	JVM Flags: 2 total; -Xms1024M -Xmx5048M
	IntCache: cache: 1, tcache: 1, allocated: 12, tallocated: 94
	FML: MCP 9.32 Powered by Forge 12.18.1.2094 21 mods loaded, 21 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] (customg1gc.jar)
	UCHIJAAAA	Forge{12.18.1.2094} [Minecraft Forge] (customg1gc.jar)
	UCHIJAAAA	spongeapi{5.0.0-SNAPSHOT-d92514e} [SpongeAPI] (minecraft.jar)
	UCHIJAAAA	sponge{1.10.2-2092-5.0.0-BETA-1758} [SpongeForge] (spongeforge-1.10.2-2092-5.0.0-BETA-1758.jar)
	UCHIJAAAA	commandscheduler{2.0} [Command Scheduler] (CommandScheduler-2.3.jar)
	UCHIJAAAA	economylite{2.2.5} [EconomyLite] (EconomyLite-5.0.0-v2.2.5.jar)
	UCHIJAAAA	ninja.leaping.permissionsex{2.0-SNAPSHOT-b140} [PermissionsEx] (PermissionsEx-Sponge (3).jar)
	UCHIJAAAA	com.enjin.sponge{3.0.11-sponge} [Enjin Minecraft Plugin] (EMPSponge.jar)
	UCHIJAAAA	io.github.hsyyid.essentialcmds{@project.informativeVersion@} [EssentialCmds] (EssentialCmds-1.10.2-8.1.14-universal.jar)
	UCHIJAAAA	griefprevention{2.1.0} [GriefPrevention] (griefprevention-1.10.2-2.1.0.73.jar)
	UCHIJAAAA	pixelmon{5.0.0-beta9} [Pixelmon] (Pixelmon-1.10.2-5.0.0-beta9-universal.jar)
	UCHIJAAAA	feebasunleashed{1.1.0} [Gym Wars 2: Feebas Unleashed] (Gym_Wars_2-Feebas_Unleashed-1.10.2-1.1.0.jar)
	UCHIJAAAA	io.github.hsyyid.kits{1.7.4} [Kits] (Kits-1.7.4.jar)
	UCHIJAAAA	pixelauction{1.1.1} [Pixel Auction] (PixelAuction-1.10.2-1.1.1-universal.jar)
	UCHIJAAAA	pixelextras{2.2.1} [Pixel Extras] (PixelExtras-1.10.2-2.2.1-universal.jar)
	UCHIJAAAA	pixelmoneconomybridge{1.2.1} [PixelmonEconomyBridge] (PixelmonEconomyBridge-1.10.2-1.2.1.jar)
	UCHIJAAAA	servershops{1.1.0} [Server Shops] (ServerShops-1.10.2-1.1.0.jar)
	UCHIJAAAA	spawnofpsy{2.2.0} [SpawnOfPsyduck] (SpawnOfPsyduck-1.10.2-2.2.0-universal.jar)
	UCHIJAAAA	wondertrade{4.4.4} [Wondertrade] (WonderTrade-1.10.2-4.4.4-universal.jar)
	UCHIJAAAA	worldedit{6.1.4-SNAPSHOT} [WorldEdit] (worldedit-sponge-mc1.10.2-6.1.4-SNAPSHOT-dist.jar)
	Loaded coremods (and transformers):
SpongeCoremod (spongeforge-1.10.2-2092-5.0.0-BETA-1758.jar)
  org.spongepowered.common.launch.transformer.SpongeSuperclassTransformer
	Profiler Position: N/A (disabled)
	Player Count: 1 / 200; [EntityPlayerMP['Terralufia'/204, l='world', x=130.14, y=97.00, z=455.07]]
	Is Modded: Definitely; Server brand changed to 'fml,forge,sponge'
	Type: Dedicated Server (map_server.txt)