[00:38:37] [Server thread/INFO]: tijn1117 lost connection: Internal Exception: java.io.IOException: Connection reset by peer
[00:38:37] [Server thread/ERROR]: Could not pass event PlayerQuitEvent to Mel_Core v1.1
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at net.minecraft.server.v1_10_R1.PlayerList.disconnect(PlayerList.java:385) [spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at net.minecraft.server.v1_10_R1.PlayerConnection.a(PlayerConnection.java:1061) [spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at net.minecraft.server.v1_10_R1.NetworkManager.handleDisconnection(NetworkManager.java:316) [spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at net.minecraft.server.v1_10_R1.ServerConnection.c(ServerConnection.java:174) [spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:827) [spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:400) [spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:668) [spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:567) [spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_72]
Caused by: java.lang.NullPointerException
	at com.bartfijneman.kingdom.Party.removePlayer(Party.java:89) ~[?:?]
	at com.bartfijneman.kingdom.PartyAPI.leaveParty(PartyAPI.java:57) ~[?:?]
	at com.bartfijneman.kingdom.listeners.Leave_Listener.quit(Leave_Listener.java:19) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_72]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_72]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_72]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_72]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.10.2.jar:git-Spigot-1e4dd71-4db0855]
	... 12 more