[00:31:44] [Server thread/ERROR]: Could not pass event PlayerInteractEvent to GuiShopManager v1.3.2
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:299) ~[spigot.jar:git-Spigot-1543]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-1543]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-1543]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-1543]
	at org.bukkit.craftbukkit.v1_7_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:243) [spigot.jar:git-Spigot-1543]
	at org.bukkit.craftbukkit.v1_7_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:213) [spigot.jar:git-Spigot-1543]
	at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java:631) [spigot.jar:git-Spigot-1543]
	at net.minecraft.server.v1_7_R3.PacketPlayInBlockPlace.a(SourceFile:60) [spigot.jar:git-Spigot-1543]
	at net.minecraft.server.v1_7_R3.PacketPlayInBlockPlace.handle(SourceFile:9) [spigot.jar:git-Spigot-1543]
	at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:184) [spigot.jar:git-Spigot-1543]
	at net.minecraft.server.v1_7_R3.ServerConnection.c(ServerConnection.java:81) [spigot.jar:git-Spigot-1543]
	at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:731) [spigot.jar:git-Spigot-1543]
	at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:284) [spigot.jar:git-Spigot-1543]
	at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:584) [spigot.jar:git-Spigot-1543]
	at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:490) [spigot.jar:git-Spigot-1543]
	at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1543]
Caused by: java.lang.NullPointerException
	at org.black_ixx.bossshop.addon.guishopmanager.GSMItems.playerClicked(GSMItems.java:147) ~[?:?]
	at org.black_ixx.bossshop.addon.guishopmanager.PlayerListener.onInteract(PlayerListener.java:106) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_60]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_60]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_60]
	at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_60]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:296) ~[spigot.jar:git-Spigot-1543]
	... 15 more