Dephande

Everytime I enter the game I cant see myself and the same zombie is attacking me, with the same error popping up saying something about _display and saturation. when I click continue it exits me out of the game and I cant play. Anyone know what to do?

When I join any server, it puts me in the same spot I was last in, being attacked by the same zombie, followed by an error message saying I need to call saturation. Right before this happened I was randomly turned into a rabbit for about 10 minutes and then was sent back to where i was before that happened. My character is invisible and all I see now is a zombie attacking the air and that error message.