[22:41:28 ERROR]: Could not pass event AsyncPlayerChatEvent to Utilities v1.4.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:74) ~[PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:499) [PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PlayerConnection.chat(PlayerConnection.java:1111) [PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1026) [PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat$1.run(PacketPlayInChat.java:39) [PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_191]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_191]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.8.0_191]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.8.0_191]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_191]
Caused by: java.lang.IllegalArgumentException: Plugin cannot be null
        at org.apache.commons.lang.Validate.notNull(Validate.java:192) ~[PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.validate(CraftScheduler.java:404) ~[PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.runTaskTimerAsynchronously(CraftScheduler.java:144) ~[PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.runTaskLaterAsynchronously(CraftScheduler.java:118) ~[PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        at com.NorthernCraftMC.Utilities.SpamDetector.getSpam(SpamDetector.java:52) ~[?:?]
        at com.NorthernCraftMC.Utilities.ChatListener.onPlayerChat(ChatListener.java:20) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_191]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_191]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_191]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_191]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[PaperSpigot_1.8.8.jar:git-PaperSpigot-"4c7641d"]
        ... 12 more