when i try to type anything to anone on sky-hg.com minecraft closes and in the corner says minecraft has crashed, but this is only on my acount! why is this?

Put the summary of the bug you're having here

What I expected to happen was...:
i would be able to talk to my brother locolucas on skyblocks.

What actually happened was...:
the game crashed when i tried to talk to anybody

Steps to Reproduce:
1.i got on skblocks
2. ...typed hey
3. ...minecraft crashed