hi every time i try to send someone a message this comes up i don't no whats wrong

i would guess that internal error would be something wrong with your copy of minecraft i would delete the entire game/ saved files and re-download everything if that wont work then submit a request for help from Mojang (makers of minecraft)

best of luck

-Rakuzion

What command are you using?

I always suggest loading a fresh copy of minecraft without any mods or texture packs.

i fixed it i was trying to send a message but i closed it and opened it and it started working thanks for the help

I had this same problem yesterday with my /craft command. It was a plugin bug though because when they were reloaded, it was fine.