same here
java.lang.IllegalArgumentException: Can't create an EntityItem for a null item
at net.minecraft.server.EntityItem.<init>(EntityItem.java:29)
at ee.core.PickupHandler.onItemPickup(PickupHandler.java:29)
at forge.ForgeHooks.onItemPickup(ForgeHooks.java:165)
at net.minecraft.server.EntityItem.a_(EntityItem.java:166)
at net.minecraft.server.EntityHuman.l(EntityHuman.java:363)
at net.minecraft.server.EntityHuman.e(EntityHuman.java:355)
at net.minecraft.server.EntityLiving.F_(EntityLiving.java:447)
at net.minecraft.server.EntityHuman.F_(EntityHuman.java:168)
at net.minecraft.server.EntityPlayer.a(EntityPlayer.java:233)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:375)
at net.minecraft.server.Packet10Flying.handle(SourceFile:126)
at net.minecraft.server.NetworkManager.b(NetworkManager.java:234)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:121)
at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:7
8)
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:556)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:453)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
>