CraftItemStack.asNMSCopy(item) must not be null

[Superkooka]

[15:18:06 ERROR]: Could not pass event BlockBreakEvent to Factionitems v1.0.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [patched.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PlayerInteractManager.breakBlock(PlayerInteractManager.java:286) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PlayerInteractManager.a(PlayerInteractManager.java:215) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:640) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PacketPlayInBlockDig.a(SourceFile:40) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PacketPlayInBlockDig.a(SourceFile:10) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [patched.jar:git-PaperSpigot-"4c7641d"]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_282]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_282]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:774) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [patched.jar:git-PaperSpigot-"4c7641d"]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_282]
Caused by: java.lang.NullPointerException: CraftItemStack.asNMSCopy(item) must not be null
        at com.superkooka.oerthyon.factionitems.utils.NBT.get(NBT.kt:19) ~[?:?]
        at com.superkooka.oerthyon.factionitems.items.pickaxe.EpicPickaxe.isEpicPickaxe(EpicPickaxe.kt:29) ~[?:?]
        at com.superkooka.oerthyon.factionitems.items.pickaxe.PickaxeBreakBlockListener.onPickaxeBreakBlock(PickaxeBreakBlockListener.kt:23) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor253.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_282]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_282]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        ... 18 more