[00:55:05 WARN]: java.lang.NullPointerException
[00:55:05 WARN]: at com.beem.craft.identity001.manager.InventoryItemsManager.isEqual(InventoryItemsManager.java:13)
[00:55:05 WARN]: at com.beem.craft.identity001.listener.InventoryClickListener.onInventoryClick(InventoryClickListener.java:137)
[00:55:05 WARN]: at sun.reflect.GeneratedMethodAccessor55.invoke(Unknown Source)
[00:55:05 WARN]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[00:55:05 WARN]: at java.lang.reflect.Method.invoke(Method.java:498)
[00:55:05 WARN]: at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306)
[00:55:05 WARN]: at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
[00:55:05 WARN]: at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)
[00:55:05 WARN]: at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)
[00:55:05 WARN]: at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1630)
[00:55:05 WARN]: at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:31)
[00:55:05 WARN]: at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:9)
[00:55:05 WARN]: at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13)
[00:55:05 WARN]: at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[00:55:05 WARN]: at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[00:55:05 WARN]: at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44)
[00:55:05 WARN]: at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715)
[00:55:05 WARN]: at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374)
[00:55:05 WARN]: at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654)
[00:55:05 WARN]: at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557)
[00:55:05 WARN]: at java.lang.Thread.run(Thread.java:748)
[00:55:05 INFO]: Error 404: Inventory Click.