Facebook i cant send message in chat?

[Lulu]

[night]

Maybe bad connection or u need update or your just trolling

[Laura]

riprova piu volte a rientrare su facebook sarà un errore di connessione..

[Terence]

if you have good internet connection and you cant send message to your Facebook friends report your problem to Facebook.
If you have problem in sending message to non friends then Facebook blocked you from sending message. Wait until they remove block