[00:48:49 ERROR]: Could not pass event PlayerInteractEvent to Skills v12.2.3
org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:500) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:485) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:235) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at net.minecraft.server.v1_12_R1.PlayerInteractManager.a(PlayerInteractManager.java:458) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:951) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at net.minecraft.server.v1_12_R1.PacketPlayInUseItem.a(PacketPlayInUseItem.java:37) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at net.minecraft.server.v1_12_R1.PacketPlayInUseItem.a(PacketPlayInUseItem.java:1) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_181]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_181]
        at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_181]
Caused by: java.lang.NullPointerException
        at me.leothepro555.skilltype.XMaterial.isDamageable(XMaterial.java:974) ~[?:?]
        at me.leothepro555.skilltype.XMaterial.isSameMaterial(XMaterial.java:933) ~[?:?]
        at me.leothepro555.skills.abilities.ActiveAbility.onSkillActivate(ActiveAbility.java:81) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor98.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_181]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_181]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[spigot.jar:git-Spigot-2cf50f0-2b93d83]
        ... 17 more