Tournament Error

[10:05:20] [Server thread/INFO] [nucleus]: axle2005 ran the command: /tournament presets save Rand
[10:05:20] [Server thread/ERROR] [Sponge]: Error occurred while executing command 'tournament presets save Rand' for source EntityPlayerMP['axle2005'/878, l='stadium', x=1446.98, y=108.00, z=882.02]: ball
java.lang.NoSuchFieldError: ball
	at com.hiroku.tournaments.util.PokemonUtils.serializePokemonSpec(PokemonUtils.java:58) ~[PokemonUtils.class:?]
	at com.hiroku.tournaments.rules.player.RandomPokemon.getSerializationString(RandomPokemon.java:157) ~[RandomPokemon.class:?]
	at com.hiroku.tournaments.Presets.savePreset(Presets.java:49) ~[Presets.class:?]
	at com.hiroku.tournaments.Presets.setPreset(Presets.java:244) ~[Presets.class:?]
	at com.hiroku.tournaments.commands.PresetsCommand.execute(PresetsCommand.java:123) ~[PresetsCommand.class:?]
	at org.spongepowered.api.command.args.ChildCommandElementExecutor.execute(ChildCommandElementExecutor.java:255) ~[ChildCommandElementExecutor.class:1.12.2-2705-7.1.0-BETA-3396]
	at org.spongepowered.api.command.spec.CommandSpec.process(CommandSpec.java:388) ~[CommandSpec.class:1.12.2-2705-7.1.0-BETA-3396]
	at org.spongepowered.api.command.dispatcher.SimpleDispatcher.process(SimpleDispatcher.java:341) ~[SimpleDispatcher.class:1.12.2-2705-7.1.0-BETA-3396]
	at org.spongepowered.common.command.SpongeCommandManager.process(SpongeCommandManager.java:329) [SpongeCommandManager.class:1.12.2-2705-7.1.0-BETA-3396]
	at net.minecraft.command.ServerCommandManager.func_71556_a(SourceFile:1083) [dh.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:958) [pa.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:937) [pa.class:?]
	at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:37) [la.class:?]
	at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:9) [la.class:?]
	at org.spongepowered.common.network.PacketUtil.onProcessPacket(PacketUtil.java:92) [PacketUtil.class:1.12.2-2705-7.1.0-BETA-3396]
	at net.minecraft.network.PacketThreadUtil$1.redirect$onProcessPacket$zle000(SourceFile:539) [hv$1.class:?]
	at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) [hv$1.class:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_171]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_171]
	at net.minecraft.util.Util.func_181617_a(SourceFile:46) [h.class:?]
	at org.spongepowered.common.SpongeImplHooks.onUtilRunTask(SpongeImplHooks.java:293) [SpongeImplHooks.class:1.12.2-2705-7.1.0-BETA-3396]
	at net.minecraft.server.MinecraftServer.redirect$onRun$zjj000(MinecraftServer.java:3972) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:723) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:396) [nz.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_171]