[15:00:49 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'crazycrate' in plugin CrazyCrates v1.8.4
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot.jar:git-Spigot-d20369f-7fc5cd8]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot.jar:git-Spigot-d20369f-7fc5cd8]
at org.bukkit.craftbukkit.v1_9_R1.CraftServer.dispatchCommand(CraftServer.java:645) ~[spigot.jar:git-Spigot-d20369f-7fc5cd8]
at net.minecraft.server.v1_9_R1.PlayerConnection.handleCommand(PlayerConnection.java:1350) [spigot.jar:git-Spigot-d20369f-7fc5cd8]
at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1185) [spigot.jar:git-Spigot-d20369f-7fc5cd8]
at net.minecraft.server.v1_9_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot.jar:git-Spigot-d20369f-7fc5cd8]
at net.minecraft.server.v1_9_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot.jar:git-Spigot-d20369f-7fc5cd8]
at net.minecraft.server.v1_9_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-d20369f-7fc5cd8]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_201]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_201]
at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:45) [spigot.jar:git-Spigot-d20369f-7fc5cd8]
at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:721) [spigot.jar:git-Spigot-d20369f-7fc5cd8]
at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400) [spigot.jar:git-Spigot-d20369f-7fc5cd8]
at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:660) [spigot.jar:git-Spigot-d20369f-7fc5cd8]
at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:559) [spigot.jar:git-Spigot-d20369f-7fc5cd8]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201]
Caused by: java.lang.NoSuchMethodError: org.bukkit.inventory.meta.ItemMeta.setUnbreakable(Z)V
at me.badbones69.crazycrates.api.objects.ItemBuilder.build(ItemBuilder.java:373) ~[?:?]
at me.badbones69.crazycrates.controllers.GUIMenu.openGUI(GUIMenu.java:96) ~[?:?]
at me.badbones69.crazycrates.Main.onCommand(Main.java:202) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-d20369f-7fc5cd8]
... 15 more