java.io.IOException: Bad packet id 81

I'm getting this error, and it seems to be lagging/crashing the server... Any idea how to fix it??

>16:40:51 [SEVERE] java.io.IOException: Bad packet id 81
>16:40:51 [SEVERE] at net.minecraft.server.Packet.a(Packet.java:73)
>16:40:51 [SEVERE] at net.minecraft.server.NetworkManager.g(NetworkManager.java:149)
>16:40:51 [SEVERE] at net.minecraft.server.NetworkManager.c(NetworkManager.java:259)
>16:40:51 [SEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFile:84)

 

My server is getting the same error, and my server admin has only noticed this since the latest recommended build. Hopefully it will get fixed, as it crashes the whole server.

 

Im still getting this error on my server with rb #1000.

Anyone know how to fix it??

 

did it say ***.***.***.*** was disconnected on the line before the error?

 

I believe I had this problem once. I figured somehow it's because I had the planes client mod and I removed it, then it works. Maybe try removing all your client mods?

 

bump im getting this too spamming my console i might have to switch to canary

 

Are u ussing right client and server versions? are u ussing anymods?