[ERROR] null
org.bukkit.command.CommandException: Unhandled exception executing command 'ce' in plugin CrazyEnchantments v1.7.1.4
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) ~[spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at org.bukkit.craftbukkit.v1_14_R1.CraftServer.dispatchCommand(CraftServer.java:707) ~[spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.PlayerConnection.handleCommand(PlayerConnection.java:1666) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.java:1506) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.PacketPlayInChat.a(PacketPlayInChat.java:47) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:13) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.PlayerConnectionUtils$$Lambda$2637/0x0000000058027780.run(Unknown Source) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.TickTask.run(SourceFile:18) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:135) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:114) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.MinecraftServer.aW(MinecraftServer.java:895) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:888) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.awaitTasks(SourceFile:123) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:872) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:805) [spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at java.lang.Thread.run(Thread.java:823) [?:1.8.0_272]
Caused by: java.lang.IllegalArgumentException: Material cannot be null
at org.apache.commons.lang.Validate.notNull(Validate.java:192) ~[spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:70) ~[spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:58) ~[spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
at me.BadBones69.CrazyEnchantments.Api.makeItem(Api.java:256) ~[?

]
at me.BadBones69.CrazyEnchantments.Controlers.ShopGUI.openGUI(ShopGUI.java:55) ~[?

]
at me.BadBones69.CrazyEnchantments.Main.onCommand(Main.java:143) ~[?

]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[spigot-1.14.jar:git-Spigot-c8d4cef-1fee35b]
... 18 more