/kit doesnt work

[Lajtmen]

after typing this the error shows up. it only happens on my current world. if i make a new one its fine.

[05:53:40] [Server thread/ERROR] [Sponge]: Error occurred while executing command 'kitcreate survival 300' for source EntityPlayerMP['Lajtmen'/846, l='survival', x=-129.24, y=65.00, z=236.79]: Could not deserialize something correctly, likely due to bad type data.
org.spongepowered.api.data.persistence.InvalidDataException: Could not deserialize something correctly, likely due to bad type data.
at org.spongepowered.api.data.persistence.AbstractDataBuilder.build(AbstractDataBuilder.java:89) ~[AbstractDataBuilder.class:1.12.2-2838-7.3.0]
at org.spongepowered.common.data.SpongeDataManager.lambda$deserialize$0(SpongeDataManager.java:188) ~[SpongeDataManager.class:1.12.2-2838-7.3.0]
at java.util.Optional.flatMap(Optional.java:241) ~[?:1.8.0_312]
at org.spongepowered.common.data.SpongeDataManager.deserialize(SpongeDataManager.java:188) ~[SpongeDataManager.class:1.12.2-2838-7.3.0]
at org.spongepowered.common.config.DataSerializableTypeSerializer.deserialize(DataSerializableTypeSerializer.java:66) ~[DataSerializableTypeSerializer.class:1.12.2-2838-7.3.0]
at org.spongepowered.common.config.DataSerializableTypeSerializer.deserialize(DataSerializableTypeSerializer.java:45) ~[DataSerializableTypeSerializer.class:1.12.2-2838-7.3.0]
at ninja.leaping.configurate.objectmapping.serialize.AbstractListChildSerializer.deserialize(AbstractListChildSerializer.java:43) ~[spongeforge-1.12.2-2838-7.3.0.jar:1.12.2-2838-7.3.0]
at ninja.leaping.configurate.objectmapping.ObjectMapper$FieldData.deserializeFrom(ObjectMapper.java:140) ~[spongeforge-1.12.2-2838-7.3.0.jar:1.12.2-2838-7.3.0]
at ninja.leaping.configurate.objectmapping.ObjectMapper$BoundInstance.populate(ObjectMapper.java:201) ~[spongeforge-1.12.2-2838-7.3.0.jar:1.12.2-2838-7.3.0]
at ninja.leaping.configurate.objectmapping.serialize.AnnotatedObjectSerializer.deserialize(AnnotatedObjectSerializer.java:34) ~[spongeforge-1.12.2-2838-7.3.0.jar:1.12.2-2838-7.3.0]
at ninja.leaping.configurate.SimpleConfigurationNode.getValue(SimpleConfigurationNode.java:232) ~[spongeforge-1.12.2-2838-7.3.0.jar:1.12.2-2838-7.3.0]
at ninja.leaping.configurate.ConfigurationNode.getValue(ConfigurationNode.java:595) ~[spongeforge-1.12.2-2838-7.3.0.jar:1.12.2-2838-7.3.0]
at bammerbom.ultimatecore.sponge.modules.kit.api.KitKeys$1.load(KitKeys.java:52) ~[KitKeys$1.class:?]
at bammerbom.ultimatecore.sponge.modules.kit.api.KitKeys$1.load(KitKeys.java:45) ~[KitKeys$1.class:?]
at bammerbom.ultimatecore.sponge.api.data.GlobalData.get(GlobalData.java:52) ~[GlobalData.class:?]
at bammerbom.ultimatecore.sponge.modules.kit.commands.CreatekitCommand.execute(CreatekitCommand.java:96) ~[CreatekitCommand.class:?]
at bammerbom.ultimatecore.sponge.api.command.impl.ExecutorListenerWrapper.execute(ExecutorListenerWrapper.java:54) ~[ExecutorListenerWrapper.class:?]
at org.spongepowered.api.command.spec.CommandSpec.process(CommandSpec.java:388) ~[CommandSpec.class:1.12.2-2838-7.3.0]
at org.spongepowered.common.command.SpongeCommandDispatcher.process(SpongeCommandDispatcher.java:355) ~[SpongeCommandDispatcher.class:1.12.2-2838-7.3.0]
at org.spongepowered.common.command.SpongeCommandManager.process(SpongeCommandManager.java:360) [SpongeCommandManager.class:1.12.2-2838-7.3.0]
at net.minecraft.command.ServerCommandManager.func_71556_a(SourceFile:665) [dh.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:962) [pa.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:941) [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.event.tracking.phase.packet.PacketPhaseUtil.onProcessPacket(PacketPhaseUtil.java:219) [PacketPhaseUtil.class:1.12.2-2838-7.3.0]
at net.minecraft.network.PacketThreadUtil$1.redirect$zle000$impl$redirectToPhaseTracker(SourceFile:540) [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_312]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_312]
at net.minecraft.util.Util.func_181617_a(SourceFile:46) [h.class:?]
at org.spongepowered.common.SpongeImplHooks.onUtilRunTask(SpongeImplHooks.java:310) [SpongeImplHooks.class:1.12.2-2838-7.3.0]
at net.minecraft.server.MinecraftServer.redirect$zji000$onRun(MinecraftServer.java:4682) [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:397) [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_312]
Caused by: java.util.NoSuchElementException: No value present
at java.util.Optional.get(Optional.java:135) ~[?:1.8.0_312]
at org.spongepowered.common.data.builder.item.SpongeItemStackSnapshotBuilder.buildContent(SpongeItemStackSnapshotBuilder.java:61) ~[SpongeItemStackSnapshotBuilder.class:1.12.2-2838-7.3.0]
at org.spongepowered.api.data.persistence.AbstractDataBuilder.build(AbstractDataBuilder.java:87) ~[AbstractDataBuilder.class:1.12.2-2838-7.3.0]
... 37 more