> [20:23:39 ERROR]: Could not pass event PlayerPickupItemEvent to nPractice v1.0
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[server.jar:git-mSpigot-2c8a8b1]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[server.jar:git-mSpigot-2c8a8b1]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:514) [server.jar:git-mSpigot-2c8a8b1]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:499) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.EntityArrow.b_(EntityArrow.java:419) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.EntityHuman.d(EntityHuman.java:457) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.EntityHuman.e(EntityHuman.java:449) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.EntityLiving.h(EntityLiving.java:1512) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.EntityHuman.h(EntityHuman.java:168) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.EntityPlayer.i(EntityPlayer.java:298) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java:462) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.PacketPlayInFlying.a(SourceFile:137) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.PacketPlayInPositionLook.handle(PacketPlayInPositionLook.java:40) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:310) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java:94) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:688) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:285) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:612) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:513) [server.jar:git-mSpigot-2c8a8b1]
at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [server.jar:git-mSpigot-2c8a8b1]
Caused by: java.lang.IllegalArgumentException: Can not set java.lang.String field net.minecraft.server.v1_7_R4.EntityItem.f to net.minecraft.server.v1_7_R4.EntityArrow
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167) ~[?:1.8.0_212]
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171) ~[?:1.8.0_212]
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:58) ~[?:1.8.0_212]
at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:36) ~[?:1.8.0_212]
at java.lang.reflect.Field.get(Field.java:393) ~[?:1.8.0_212]
at me.nick.npractice.util.EntityHider.getPlayerWhoDropped(EntityHider.java:350) ~[?:?]
at me.nick.npractice.util.EntityHider.onPlayerPickupItem(EntityHider.java:306) ~[?:?]
at sun.reflect.GeneratedMethodAccessor171.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_212]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_212]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:298) ~[server.jar:git-mSpigot-2c8a8b1]
... 19 more