[23:23:57 ERROR]: Could not pass event PlayerInteractEvent to Practice v1.0
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:227) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:194) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:190) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:717) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:52) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:1) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_60]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_60]
	at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:714) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:653) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:556) [spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_60]
Caused by: java.lang.NullPointerException
	at eu.uprizing.practice.Data.isItem(Data.java:152) ~[?:?]
	at eu.uprizing.practice.listeners.PlayerInteractListener.onRankedInteract(PlayerInteractListener.java:54) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_60]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_60]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	... 18 more