[04:15:40] [Server thread/ERROR]: Could not pass event ChunkUnloadEvent to Citizens v2.0.13-SNAPSHOT (build 1168)
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:509) [Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:494) [Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at net.minecraft.server.v1_7_R4.ChunkProviderServer.unloadChunks(ChunkProviderServer.java:342) [Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at net.minecraft.server.v1_7_R4.WorldServer.doTick(WorldServer.java:196) [Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:690) [Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289) [Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584) [Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490) [Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
Caused by: java.lang.NullPointerException
	at net.aufdemrand.sentry.SentryInstance.dismount(SentryInstance.java:1830) ~[?:?]
	at net.aufdemrand.sentry.SentryTrait.onDespawn(SentryTrait.java:168) ~[?:?]
	at net.citizensnpcs.npc.CitizensNPC.despawn(CitizensNPC.java:76) ~[?:?]
	at net.citizensnpcs.EventListen.onChunkUnload(EventListen.java:121) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_21]
	at java.lang.reflect.Method.invoke(Method.java:601) ~[?:1.7.0_21]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:298) ~[Spigot-Updated.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
	... 10 more