[WARNING] Failed to handle packet: java.lang.NullPointerException please help!

Code:

2012-05-09 19:05:22 [INFO] Disconnecting leVo001 [/145.236.126.207:2304]: Internal server error
2012-05-09 19:05:22 [WARNING] Failed to handle packet: java.lang.NullPointerException
java.lang.NullPointerException
at net.minecraft.server.ServerConfigurationManager.attemptLogin(ServerConfigurationManager.java:207)
at net.minecraft.server.NetLoginHandler.b(NetLoginHandler.java:102)
at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:94)
at net.minecraft.server.Packet1Login.handle(SourceFile:68)
at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)
at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:48)
at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:61)
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:551)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:449)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

I randomly get this error after a player disconnect from my bukkit server and it's causes a big lag which throw down all of the players. No matter how many players are there on the server. I'm using the latest stable build of bukkit.

My Plugin list: WorldEdit, Websend, Flight, SpamGuard, Vault, PluginReloader, Multiverse-Core, PvPToggle, PermissionsEx, Questioner, Jail, WorldGuard, dynmap, mChatSuite, InfinitePlots, AutoMessage, MineBackup, Random Spawn, iConomy, AuthMe, Register, HelpCenter, NoCheat, AutoSaveWorld, InfiniteClaims, MobDisguise, Essentials, Jobs, SimpleRegionMarket, Towny, EssentialsSpawn, Multiverse-Portals, Multiverse-Inventories, LWC, Dynmap-Towny, DynamicShop

Please help me!

 

Not really sure what is going on. I believe I have seen that error before though. It could be your system does not have enough RAM?

 

The server has 8 GB RAM and it's uses usually only 4.

 

Hmm, did it crash the server? If it is not doing any damage I think you are safe.

 

Yeah, I've get this every now and then. I've been ignoring it for awhile because it hasn't caused any harm to the server.

 

It's only causes lag for 5-10 seconds and drop down all player from server.

 

I have the same error after my server kicks me for "took to long to log in" and freezes my client.

 

I think issue is NoCheatPlus, With The Latest RB. Of Bukkit, RB3.

 

Well I've been trying to decipher some coding like this, so this may be incorrect, but I believe that this may be:
.lang. - Language Settings
.Nullpointer. (and/ or .Nullpointerexception.) - Java or Craftbukkit (As Java platform) cannot find a specified file
....And all of the other files listed are what may be in the error.

So, what seems to be putting it together, it means that a file and/or files are being searched for but not found. As it is doing this, it takes up close or maximum memory, which causes temporary lag and since the server temporary overloads, people get a message "Disconnected by server: Internal Server Error".

As far as fixing this, there may be a couple corrupt files through your plugins, and possibly a bug with Craftbukkit (Even in its stable build). Going through and checking every single file is probably the only manual way of doing it, but probably the longest and hardest. As long as your server doesn't have severe problems, such as harming the server as far as deleting files as in mentioned above, I wouldn't worry about it.

Also, I don't believe that this would cause the error because other people are having this problem, such as me, and I don't have nocheat or nocheat+

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

 

What SPGEARClub said