[22:01:44 ERROR]: Could not pass event InventoryClickEvent to BedWars v2.0.2
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:305) ~[spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:1588) [spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at net.minecraft.server.v1_8_R1.PacketPlayInWindowClick.a(SourceFile:31) [spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at net.minecraft.server.v1_8_R1.PacketPlayInWindowClick.a(SourceFile:9) [spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [?:1.7.0_75]
        at java.util.concurrent.FutureTask.run(FutureTask.java:262) [?:1.7.0_75]
        at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:696) [spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_75]
Caused by: org.bukkit.command.CommandException: Unhandled exception executing command 'spawner' in plugin BedWars v2.0.2
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at org.bukkit.craftbukkit.v1_8_R1.CraftServer.dispatchCommand(CraftServer.java:646) ~[spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at me.MinecraftDev96.BedWars.Main.onInvClick(Main.java:2147) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_75]
        at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_75]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) ~[spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        ... 14 more
Caused by: java.lang.NullPointerException
        at me.MinecraftDev96.BedWars.Spawner.<init>(Spawner.java:22) ~[?:?]
        at me.MinecraftDev96.BedWars.cmd.cmd_spawner.onCommand(cmd_spawner.java:33) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at org.bukkit.craftbukkit.v1_8_R1.CraftServer.dispatchCommand(CraftServer.java:646) ~[spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        at me.MinecraftDev96.BedWars.Main.onInvClick(Main.java:2147) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_75]
        at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_75]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) ~[spigot-1.8.1.jar:git-Spigot-8a983f9-e81edfc]
        ... 14 more