[22:16:49] [Server thread/ERROR]: Error occurred while enabling KarolekDrop v1.0-SNAPSHOT (Is it up to date?)
java.lang.NullPointerException
	at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:68) ~[serwer.jar:git-Spigot-1627]
	at net.karolek.api.utils.Util.getItemStackFromString(Util.java:206) ~[?:?]
	at net.karolek.drop.data.Drop.<init>(Drop.java:39) ~[?:?]
	at net.karolek.drop.data.drops.RandomDropData.<init>(RandomDropData.java:28) ~[?:?]
	at net.karolek.drop.managers.DropManager.setup(DropManager.java:25) ~[?:?]
	at net.karolek.drop.DropPlugin.onEnable(DropPlugin.java:35) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316) ~[serwer.jar:git-Spigot-1627]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [serwer.jar:git-Spigot-1627]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [serwer.jar:git-Spigot-1627]
	at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugin(CraftServer.java:476) [serwer.jar:git-Spigot-1627]
	at org.bukkit.craftbukkit.v1_7_R4.CraftServer.enablePlugins(CraftServer.java:394) [serwer.jar:git-Spigot-1627]
	at org.bukkit.craftbukkit.v1_7_R4.CraftServer.reload(CraftServer.java:866) [serwer.jar:git-Spigot-1627]
	at org.bukkit.Bukkit.reload(Bukkit.java:301) [serwer.jar:git-Spigot-1627]
	at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:23) [serwer.jar:git-Spigot-1627]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:181) [serwer.jar:git-Spigot-1627]
	at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchCommand(CraftServer.java:767) [serwer.jar:git-Spigot-1627]
	at net.minecraft.server.v1_7_R4.PlayerConnection.handleCommand(PlayerConnection.java:1013) [serwer.jar:git-Spigot-1627]
	at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java:850) [serwer.jar:git-Spigot-1627]
	at net.minecraft.server.v1_7_R4.PacketPlayInChat.a(PacketPlayInChat.java:28) [serwer.jar:git-Spigot-1627]
	at net.minecraft.server.v1_7_R4.PacketPlayInChat.handle(PacketPlayInChat.java:65) [serwer.jar:git-Spigot-1627]
	at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:184) [serwer.jar:git-Spigot-1627]
	at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java:81) [serwer.jar:git-Spigot-1627]
	at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:734) [serwer.jar:git-Spigot-1627]
	at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289) [serwer.jar:git-Spigot-1627]
	at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584) [serwer.jar:git-Spigot-1627]
	at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490) [serwer.jar:git-Spigot-1627]
	at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [serwer.jar:git-Spigot-1627]