[12:54:49 ERROR]: Could not pass event PlayerQuitEvent to PvPManager v3.1.8
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at net.minecraft.server.v1_8_R3.PlayerList.disconnect(PlayerList.java:348) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:871) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at net.minecraft.server.v1_8_R3.PlayerConnection.disconnect(PlayerConnection.java:183) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at org.bukkit.craftbukkit.v1_8_R3.entity.CraftPlayer.kickPlayer(CraftPlayer.java:217) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at me.confuser.banmanager.commands.BanCommand$1$1.run(BanCommand.java:166) [BanManagerb66.jar:?]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:71) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:723) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_91]
Caused by: java.lang.NullPointerException
        at me.NoChance.PvPManager.Managers.ConfigManager.saveUser(ConfigManager.java:121) ~[?:?]
        at me.NoChance.PvPManager.Managers.PlayerHandler.removeUser(PlayerHandler.java:119) ~[?:?]
        at me.NoChance.PvPManager.Listeners.PlayerListener.onPlayerLogout(PlayerListener.java:70) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor655.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.8.8.jar:git-Spigot-e4d4710-e1ebe52]
        ... 15 more