[14:54:43 ERROR]: Could not pass event PlayerInteractEvent to TCWizards v2.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:294) ~[spigot.jar:git-Spigot-1491]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:62) ~[spigot.jar:git-Spigot-1491]
        at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredLi
stener.java:30) ~[spigot.jar:git-Spigot-1491]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j
ava:502) [spigot.jar:git-Spigot-1491]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:487) [spigot.jar:git-Spigot-1491]
        at org.bukkit.craftbukkit.v1_7_R3.event.CraftEventFactory.callPlayerInte
ractEvent(CraftEventFactory.java:233) [spigot.jar:git-Spigot-1491]
        at org.bukkit.craftbukkit.v1_7_R3.event.CraftEventFactory.callPlayerInte
ractEvent(CraftEventFactory.java:203) [spigot.jar:git-Spigot-1491]
        at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java
:618) [spigot.jar:git-Spigot-1491]
        at net.minecraft.server.v1_7_R3.PacketPlayInBlockPlace.a(SourceFile:60)
[spigot.jar:git-Spigot-1491]
        at net.minecraft.server.v1_7_R3.PacketPlayInBlockPlace.handle(SourceFile
:9) [spigot.jar:git-Spigot-1491]
        at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:180
) [spigot.jar:git-Spigot-1491]
        at net.minecraft.server.v1_7_R3.ServerConnection.c(ServerConnection.java
:81) [spigot.jar:git-Spigot-1491]
        at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:7
20) [spigot.jar:git-Spigot-1491]
        at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:2
83) [spigot.jar:git-Spigot-1491]
        at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:5
83) [spigot.jar:git-Spigot-1491]
        at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java
:489) [spigot.jar:git-Spigot-1491]
        at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:6
28) [spigot.jar:git-Spigot-1491]
Caused by: java.lang.IllegalArgumentException: Plugin cannot be null
        at org.apache.commons.lang.Validate.notNull(Validate.java:192) ~[spigot.
jar:git-Spigot-1491]
        at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftScheduler.validate(Craf
tScheduler.java:391) ~[spigot.jar:git-Spigot-1491]
        at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftScheduler.runTaskTimer(
CraftScheduler.java:120) ~[spigot.jar:git-Spigot-1491]
        at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftScheduler.scheduleSyncR
epeatingTask(CraftScheduler.java:116) ~[spigot.jar:git-Spigot-1491]
        at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftScheduler.scheduleSyncD
elayedTask(CraftScheduler.java:100) ~[spigot.jar:git-Spigot-1491]
        at TCWizards.TCWizards.onVolcanoActivate(TCWizards.java:166) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0
_51]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0
_51]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1
.7.0_51]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_51]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:292) ~[spigot.jar:git-Spigot-1491]
        ... 16 more