Solved I recieved a [WARNING] while playing on Bukkit server

I recieved this warning while I was playing on my server (Alone), no body else was on the server.

17:28:26 [SEVERE] java.lang.NullPointerException
17:28:27 [SEVERE]at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:34)
17:28:27 [SEVERE]at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:160)
17:28:27 [SEVERE]at net.minecraft.server.Packet254GetInfo.handle(SourceFile:16)
17:28:27 [SEVERE]at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)
17:28:27 [SEVERE]at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:48)
17:28:27 [SEVERE]at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:61)
17:28:27 [SEVERE]at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:567)
17:28:27 [SEVERE]at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:459)
17:28:27 [SEVERE]at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

If ANYONE knows what this means or has any idea of what it may mean, please help.

Just to inform you not that long in that day I had port forwarded my Apple router, (AirPortExtreme). I used the port map setting, fallowing several Youtube tutorials and on Portforward.com.

by the way my plugins are, Iconomy, chestshop, vault, lockette, jobs, dynmap, essentials, and Nolagg.

Thanks, if anyone knows about this please inform me!

 

If this is your first time seeing this error and it didn't cause a crash or anything, then don't worry about the error.

 

The error accured two times, that was the second time.

 

Sometimes a random error comes up, I wouldn't worry about it unless the error persists.

 

Thanks

 

That is not a Bukkit problem, no references to the org.bukkit classpath in the stack trace.

 

Ok thank you did not know just making sure

The error accured in bukkit though, it was in terminal while the server was running

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

thats where all the errors is shown

 

I know, but Andrew said that it was not a Bukkit problem, but it was in bukkit.

The ERROR accured again! Here is the error

182 recipes
27 achievements
08:03:43 [INFO] Starting minecraft server version 1.2.5
08:03:43 [INFO] Loading properties
08:03:43 [INFO] Starting Minecraft server on *:25565
08:03:44 [INFO] This server is running CraftBukkit version git-Bukkit-1.2.5-R4.0-b2222jnks (MC: 1.2.5) (Implementing API version 1.2.5-R4.0)
08:03:47 [INFO] [iConomy] Loading iConomy v7.0
08:03:47 [INFO] [mcjobs] Loading mcjobs v2.6.4
08:03:47 [INFO] [PermissionsBukkit] Loading PermissionsBukkit v1.6
08:03:47 [INFO] [BKCommonLib] Loading BKCommonLib v1.2
08:03:47 [INFO] [Lockette] Loading Lockette v1.6
08:03:47 [INFO] [Vault] Loading Vault v1.2.16-b184
08:03:47 [INFO] [dynmap] Loading dynmap v0.39-1163
08:03:47 [INFO] [Essentials] Loading Essentials v2.9.1
08:03:47 [INFO] [EssentialsProtect] Loading EssentialsProtect v2.9.1
08:03:47 [INFO] MLog clients using java 1.4+ standard logging.
08:03:47 [INFO] [EssentialsSpawn] Loading EssentialsSpawn v2.9.1
08:03:47 [INFO] [NoLagg] Loading NoLagg v1.84
08:03:47 [INFO] [ChestShop] Loading ChestShop v3.42
08:03:47 [INFO] [EssentialsChat] Loading EssentialsChat v2.9.1
08:03:47 [INFO] [BKCommonLib] Enabling BKCommonLib v1.2
08:03:47 [INFO] BKCommonLib version 1.2 enabled!
08:03:47 [INFO] [Vault] Enabling Vault v1.2.16-b184
08:03:47 [INFO] [Vault][Economy] Essentials Economy found: Waiting
08:03:47 [SEVERE] iConomy6 - If you are using Flatfile storage be aware that iCo6 has a CRITICAL bug which can wipe ALL iconomy data.
08:03:47 [SEVERE] if you're using Votifier, or any other plugin which handles economy data in a threaded manner your server is at risk!
08:03:47 [SEVERE] it is highly suggested to use SQL with iCo6 or to use an alternative economy plugin!
08:03:47 [INFO] [Vault][Economy] iConomy 6 found: Waiting
08:03:47 [INFO] [Vault][Permission] PermissionsBukkit hooked.
08:03:47 [INFO] [Vault][Permission] PermissionsBukkit found: Waiting
08:03:47 [INFO] [Vault][Permission] SuperPermissions loaded as backup permission system.
08:03:48 [INFO] [Vault] Enabled Version 1.2.16-b184
08:03:48 [INFO] [NoLagg] Enabling NoLagg v1.84
08:03:49 [INFO] [NoLagg Saving] will write world data to all region files every 12000 ticks (10.0 minutes)
08:03:49 [INFO] NoLagg version 1.84 enabled!
08:03:49 [INFO] Preparing level "world"
08:03:49 [INFO] Default game type: 0
08:03:50 [INFO] Preparing start region for level 0 (Seed: 7051523336035328086)
08:03:51 [INFO] Preparing spawn area: 16%
08:03:52 [INFO] Preparing spawn area: 28%
08:03:53 [INFO] Preparing spawn area: 56%
08:03:54 [INFO] Preparing spawn area: 77%
08:03:55 [INFO] Preparing start region for level 1 (Seed: 7051523336035328086)
08:03:55 [INFO] Preparing spawn area: 8%
08:03:56 [INFO] Preparing spawn area: 52%
08:03:57 [INFO] Preparing spawn area: 81%
08:03:58 [INFO] [iConomy] Enabling iConomy v7.0
08:05:22 [INFO] [iConomy - April Fools] Enabled (448 ms)
08:05:23 [INFO] [iConomy - April Fools] Purged accounts with default balance.
08:05:23 [INFO] [iConomy] Hello, I'm Nijikokun. Yes, this is an April Fools joke, but '/money top' was fixed! Enjoy - Rare Version!
08:05:23 [INFO] [Vault][Economy] iConomy 6 hooked.
08:05:23 [INFO] [mcjobs] Enabling mcjobs v2.6.4
08:05:24 [INFO] [mcjobs] Using builtin logging methods.
08:05:24 [INFO] [mcjobs] Found Vault 1.2.16-b184
08:05:25 [INFO] [mcjobs] LOADING JOBS: [digger, miner, builder, soldier, tinkerer, woodsman, farmer, toolmaker, weaponsmith, armorer, fisherman, baker, alchemist, bulldozer, taxes]
08:05:27 [INFO] [mcjobs] Loaded player data file...
08:05:28 [INFO] [mcjobs] Loading cache permission file...
08:05:28 [INFO] [mcjobs] MC Jobs has been enabled!
08:05:28 [INFO] [PermissionsBukkit] Enabling PermissionsBukkit v1.6
08:05:28 [INFO] [PermissionsBukkit] Enabled successfully, 0 players registered
08:05:28 [INFO] [Vault][Permission] PermissionsBukkit hooked.
08:05:28 [INFO] [Lockette] Enabling Lockette v1.6
08:05:29 [INFO] [Lockette] Version 1.6 is being enabled! Yay! (Core version 1.3.2)
08:05:29 [INFO] [Lockette] Detected craftbukkit build [2222] ok.
08:05:29 [INFO] [Lockette] Custom lockable block list: [116, 84, 57]
08:05:29 [INFO] [Lockette] Enabled link to plugin PermissionsBukkit for Groups, version 1.6
08:05:29 [INFO] [Lockette] Using ops file for admin permissions.
08:05:30 [INFO] [Lockette] Ready to protect your containers.
08:05:30 [INFO] [dynmap] Enabling dynmap v0.39-1163
08:05:31 [INFO] [dynmap] Using PermissionsBukkit 1.6 for access control
08:05:31 [INFO] [dynmap] Web interface permissions only available for online users
08:05:52 [INFO] [dynmap] Loaded 20 shaders.
08:05:54 [INFO] [dynmap] Loaded 82 perspectives.
08:05:54 [INFO] [dynmap] Loaded 12 lightings.
08:06:00 [INFO] [dynmap] Web server started on address 10.0.1.20:25566
08:06:00 [INFO] [dynmap] version 0.39-1163 is enabled - core version 0.39-259
08:06:00 [INFO] [dynmap] Loaded 3 maps of world 'world'.
08:06:00 [INFO] [dynmap] Loaded 2 maps of world 'world_the_end'.
08:06:01 [INFO] [dynmap] Enabled
08:06:02 [INFO] [Essentials] Enabling Essentials v2.9.1
08:06:06 [INFO] [Vault][Economy] Essentials Economy hooked.
08:06:06 [INFO] Essentials: Using PermissionsBukkit based permissions.
08:06:06 [INFO] [Essentials] Payment method found (Vault - Economy: iConomy 6 version: 1.2.16-b184)
08:06:06 [INFO] [EssentialsProtect] Enabling EssentialsProtect v2.9.1
08:06:27 [INFO] Initializing c3p0-0.9.1.2 [built 21-May-2007 15:04:56; debug? true; trace: 10]
08:06:40 [INFO] [EssentialsSpawn] Enabling EssentialsSpawn v2.9.1
08:06:40 [INFO] [ChestShop] Enabling ChestShop v3.42
08:06:41 [INFO] [ChestShop] Lockette version 1.6 loaded.
08:06:41 [INFO] [ChestShop] Vault loaded - using iConomy 6
08:06:42 [INFO] [EssentialsChat] Enabling EssentialsChat v2.9.1
08:06:42 [INFO] Server permissions file permissions.yml is empty, ignoring it
08:06:43 [INFO] Done (173.614s)! For help, type "help" or "?"
08:06:45 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:07:08 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:08:18 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:08:23 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:09:57 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:10:00 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:16:15 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:23:42 [SEVERE] java.lang.NullPointerException
08:23:43 [SEVERE] at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:34)
08:23:43 [SEVERE] at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:160)
08:23:43 [SEVERE] at net.minecraft.server.Packet254GetInfo.handle(SourceFile:16)
08:23:43 [SEVERE] at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)
08:23:43 [SEVERE] at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:48)
08:23:43 [SEVERE] at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:61)
08:23:43 [SEVERE] at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:567)
08:23:43 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:459)
08:23:43 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
08:23:43 [INFO] /10.0.1.20:50747 lost connection
08:23:43 [INFO] /192.168.254.27:38898 lost connection
08:23:44 [INFO] /10.0.1.20:50753 lost connection
08:23:44 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:23:59 [INFO] Danimal47 [/192.168.254.27:43353] logged in with entity id 37 at ([world] -141.18556787790868, 66.08202381426399, 244.70247805152985)
08:24:31 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:24:42 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:24:44 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:24:48 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:24:51 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:25:04 [INFO] Placed stronghold in INVALID biome at (-41, -4)
08:25:17 [INFO] [PLAYER_COMMAND] Danimal47: /spawn
08:26:08 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:27:01 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:27:19 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:27:32 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:27:51 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:27:53 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:28:00 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:28:34 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:28:43 [INFO] Danimal47 lost connection: disconnect.quitting
08:28:44 [INFO] Connection reset
08:29:02 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:29:11 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:29:14 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:29:17 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:29:38 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:29:44 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:29:52 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
08:29:54 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
>

If anyone knows what this means, PLEASE help, it may becausing my server to lag and shut down!

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

As I said, it is not a problem with Bukkit - the issue you're experiencing is caused by a fault in the programming of the 'Vanilla' Minecraft server.

 

So how do I fix it?

 

You can't..

 

An hour ago when I was launching my server terminal just stopped and stayed frozen for a good hour. I decided I'd just force quit it then launch it again. After I force quited it I could no longer start the server with the start.command. What do I do?

Oh

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

It's just a stack trace, not really an "error." Ignore these things if they don't crash the server or cause any problems you wouldn't know about without reading the console.

It's like my heart, I have a minor murmur, but it's asymptomatic, so who cares?