java.io.IOException: Bad packet id 111

[enkious]

I keep getting this error.. and not sure how to get it removed...

2015-12-03 15:01:40 [INFO] [STDERR] java.io.IOException: Bad packet id 111
2015-12-03 15:01:40 [INFO] [STDERR]     at net.minecraft.network.packet.Packet.func_73272_a(Packet.java:153)
2015-12-03 15:01:40 [INFO] [STDERR]     at net.minecraft.network.TcpConnection.func_74447_i(TcpConnection.java:327)
2015-12-03 15:01:40 [INFO] [STDERR]     at net.minecraft.network.TcpConnection.func_74450_c(TcpConnection.java:547)
2015-12-03 15:01:40 [INFO] [STDERR]     at net.minecraft.network.TcpReaderThread.run(SourceFile:94)

 

Also, does this mean people are connecting and losing connection??

2015-12-03 15:31:37 [INFO] [Minecraft-Server] Disconnecting /192.95.59.147:46064: Protocol error
2015-12-03 15:31:37 [INFO] [Minecraft-Server] /192.95.59.147:46064 lost connection
2015-12-03 15:33:21 [INFO] [Minecraft-Server] /192.210.227.226:48513 lost connection
2015-12-03 15:39:20 [INFO] [Minecraft-Server] /192.210.227.226:44606 lost connection
2015-12-03 15:43:23 [INFO] [Minecraft-Server] /192.210.227.226:60748 lost connection

 

Thank you to anyone who helps.

I am running The newest Voltz server.

2015-11-24 18:45:47 [INFO] Starting minecraft server version 1.5.2