[Discontinued/Not available anymore] BetterKits - NBT support, Kit preview, easy to use

theres a problem, when I look at the chest and do try to create a kit it says “you’re not pointing at a chest” when I am, anyone else getting this problem? other then that this Plugin is really nice. simple and easy to use

Whenever I try to use /kit Starter I get this. Even if I look at a chest and type /kitcreate starter

13.01 09:18:08 [Server] Server thread/ERROR [Sponge]: Error occurred while executing command 'kit starter' for source EntityPlayerMP['Xyphien'/36, l='Camstratia', x=-217.69, y=54.00, z=599.41]: org.spongepowered.api.item.inventory.entity.PlayerInventory.getMain()Lorg/spongepowered/api/item/inventory/type/GridInventory;
13.01 09:18:08 [Server] INFO java.lang.NoSuchMethodError: org.spongepowered.api.item.inventory.entity.PlayerInventory.getMain()Lorg/spongepowered/api/item/inventory/type/GridInventory;
13.01 09:18:08 [Server] INFO at net.kaikk.mc.betterkits.sponge.commands.KitCommand.execute(KitCommand.java:64) ~[KitCommand.class:?]
13.01 09:18:08 [Server] INFO at org.spongepowered.api.command.spec.CommandSpec.process(CommandSpec.java:388) ~[CommandSpec.class:1.12.2-2705-7.1.0-BETA-3361]
13.01 09:18:08 [Server] INFO at org.spongepowered.api.command.dispatcher.SimpleDispatcher.process(SimpleDispatcher.java:341) ~[SimpleDispatcher.class:1.12.2-2705-7.1.0-BETA-3361]
13.01 09:18:08 [Server] INFO at org.spongepowered.common.command.SpongeCommandManager.process(SpongeCommandManager.java:329) [SpongeCommandManager.class:1.12.2-2705-7.1.0-BETA-3361]
13.01 09:18:08 [Server] INFO at net.minecraft.command.ServerCommandManager.func_71556_a(SourceFile:1083) [dh.class:?]
13.01 09:18:08 [Server] INFO at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:958) [pa.class:?]
13.01 09:18:08 [Server] INFO at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:937) [pa.class:?]
13.01 09:18:08 [Server] INFO at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:37) [la.class:?]
13.01 09:18:08 [Server] INFO at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:9) [la.class:?]
13.01 09:18:08 [Server] INFO at org.spongepowered.common.network.PacketUtil.onProcessPacket(PacketUtil.java:92) [PacketUtil.class:1.12.2-2705-7.1.0-BETA-3361]
13.01 09:18:08 [Server] INFO at net.minecraft.network.PacketThreadUtil$1.redirect$onProcessPacket$zle000(SourceFile:539) [hv$1.class:?]
13.01 09:18:08 [Server] INFO at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) [hv$1.class:?]
13.01 09:18:08 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_191]
13.01 09:18:08 [Server] INFO at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_191]
13.01 09:18:08 [Server] INFO at net.minecraft.util.Util.func_181617_a(SourceFile:46) [h.class:?]
13.01 09:18:08 [Server] INFO at org.spongepowered.common.SpongeImplHooks.onUtilRunTask(SpongeImplHooks.java:293) [SpongeImplHooks.class:1.12.2-2705-7.1.0-BETA-3361]
13.01 09:18:08 [Server] INFO at net.minecraft.server.MinecraftServer.redirect$onRun$zjj000(MinecraftServer.java:3963) [MinecraftServer.class:?]
13.01 09:18:08 [Server] INFO at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:723) [MinecraftServer.class:?]
13.01 09:18:08 [Server] INFO at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:396) [nz.class:?]
13.01 09:18:08 [Server] INFO at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668) [MinecraftServer.class:?]
13.01 09:18:08 [Server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
13.01 09:18:08 [Server] INFO at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]

Closed at author’s request.