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java.lang.NullPointerException: 	at java.lang.String.contains(Unknown Source)	at me.BadBones69.CrazyEnchantments.Api.getEnchAmount(Api.java:585)	at me.BadBones69.CrazyEnchantments.GUI.addEnchantment(GUI.java:470)	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306)	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)	at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1750)	at net.minecraft.server.v1_8_R3.PacketPlayInSetCreativeSlot.a(SourceFile:23)	at net.minecraft.server.v1_8_R3.PacketPlayInSetCreativeSlot.a(SourceFile:9)	at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13)	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)	at java.util.concurrent.FutureTask.run(Unknown Source)	at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:60)	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:718)	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:368)	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:657)	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:560)	at java.lang.Thread.run(Unknown Source)