Помогите Ошибка в консоли

Привет всем. Плагин на кейсы.
Когда нажимаю на кейс ЛКМ ошибка и не работает.

Код:

[20:39:49] [Server thread/ERROR]: Could not pass event PlayerInteractEvent to Crates v1.0
org.bukkit.event.EventException
   at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot.jar:git-Spigot-5f38d38-18fbb24]
   at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-5f38d38-18fbb24]
   at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:228) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:195) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at net.minecraft.server.v1_8_R3.PlayerInteractManager.a(PlayerInteractManager.java:107) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:623) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at net.minecraft.server.v1_8_R3.PacketPlayInBlockDig.a(SourceFile:40) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at net.minecraft.server.v1_8_R3.PacketPlayInBlockDig.a(SourceFile:10) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_121]
   at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_121]
   at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot.jar:git-Spigot-5f38d38-18fbb24]
   at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
Caused by: java.lang.NullPointerException
   at ru.ZentoFX.crates.RollingHopper.open(RollingHopper.java:78) ~[?:?]
   at ru.ZentoFX.crates.Case.open(Case.java:250) ~[?:?]
   at ru.ZentoFX.crates.PlayerListener.onPlayerInteract(PlayerListener.java:70) ~[?:?]
   at sun.reflect.GeneratedMethodAccessor66.invoke(Unknown Source) ~[?:?]
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_121]
   at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_121]
   at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-5f38d38-18fbb24]
   ... 18 more

 

Где то бублик NullPointerException