[11:08:44 ERROR]: Could not pass event InventoryClickEvent to GlobalMarket v1.3.0-SNAPSHOT
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427) ~[srv.jar:git-Spigot-1211]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[srv.jar:git-Spigot-1211]
        at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30) ~[srv.jar:git-Spigot-1211]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:482) [srv.jar:git-Spigot-1211]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:467) [srv.jar:git-Spigot-1211]
        at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:1369) [srv.jar:git-Spigot-1211]
        at net.minecraft.server.v1_7_R1.PacketPlayInWindowClick.a(SourceFile:32) [srv.jar:git-Spigot-1211]
        at net.minecraft.server.v1_7_R1.PacketPlayInWindowClick.handle(SourceFile:10) [srv.jar:git-Spigot-1211]
        at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:147) [srv.jar:git-Spigot-1211]
        at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134) [srv.jar:git-Spigot-1211]
        at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:657) [srv.jar:git-Spigot-1211]
        at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:259) [srv.jar:git-Spigot-1211]
        at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:540) [srv.jar:git-Spigot-1211]
        at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:446) [srv.jar:git-Spigot-1211]
        at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [srv.jar:git-Spigot-1211]
Caused by: java.lang.NullPointerException
        at com.survivorserver.GlobalMarket.InterfaceListener.clickEvent(InterfaceListener.java:63) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor62.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_40]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_40]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425) ~[srv.jar:git-Spigot-1211]
        ... 14 more