[13:41:23 ERROR]: Could not pass event InventoryClickEvent to Mobcoins v2.7
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja                                                                                                                                                             va:302) ~[spigot.jar:?]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav                                                                                                                                                             a:62) ~[spigot.jar:?]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j                                                                                                                                                             ava:509) [spigot.jar:?]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j                                                                                                                                                             ava:494) [spigot.jar:?]
        at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java                                                                                                                                                             :1483) [spigot.jar:?]
        at net.minecraft.server.v1_7_R4.PacketPlayInWindowClick.a(PacketPlayInWi                                                                                                                                                             ndowClick.java:15) [spigot.jar:?]
        at net.minecraft.server.v1_7_R4.PacketPlayInWindowClick.handle(PacketPla                                                                                                                                                             yInWindowClick.java:65) [spigot.jar:?]
        at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:189                                                                                                                                                             ) [spigot.jar:?]
        at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java                                                                                                                                                             :81) [spigot.jar:?]
        at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:7                                                                                                                                                             99) [spigot.jar:?]
        at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:3                                                                                                                                                             12) [spigot.jar:?]
        at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:6                                                                                                                                                             45) [spigot.jar:?]
        at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java                                                                                                                                                             :550) [spigot.jar:?]
        at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:6                                                                                                                                                             28) [spigot.jar:?]
Caused by: java.lang.NullPointerException
        at com.peaches.mobcoins.Events.OnInvClick(Events.java:75) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor30.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces                                                                                                                                                             sorImpl.java:43) ~[?:1.8.0_151]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_151]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja                                                                                                                                                             va:298) ~[spigot.jar:?]
        ... 13 more