[11:11:03 ERROR]: Could not pass event PlayerInteractEvent to Drugs v2.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:305) ~[spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:62) ~[spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j
ava:502) [spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:487) [spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callPlayerInte
ractEvent(CraftEventFactory.java:226) [spigot-patched.jar:git-Spigot-b43a31a-7bc
218d]
        at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callPlayerInte
ractEvent(CraftEventFactory.java:193) [spigot-patched.jar:git-Spigot-b43a31a-7bc
218d]
        at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callPlayerInte
ractEvent(CraftEventFactory.java:189) [spigot-patched.jar:git-Spigot-b43a31a-7bc
218d]
        at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java
:682) [spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        at net.minecraft.server.v1_8_R1.PacketPlayInBlockPlace.a(PacketPlayInBlo
ckPlace.java:50) [spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        at net.minecraft.server.v1_8_R1.PacketPlayInBlockPlace.a(PacketPlayInBlo
ckPlace.java:80) [spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [spi
got-patched.jar:git-Spigot-b43a31a-7bc218d]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [
?:1.8.0_20]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_20]
        at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:6
83) [spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:3
16) [spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:6
23) [spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java
:526) [spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_20]
Caused by: java.lang.NullPointerException
        at com.ohyea777.drugs.listener.DrugListener.onPlayerInteract(DrugListene
r.java:53) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0
_20]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0
_20]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1
.8.0_20]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_20]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:301) ~[spigot-patched.jar:git-Spigot-b43a31a-7bc218d]
        ... 17 more