The message is
"You are forced to be logged off. Please be logged in again."
This message is kind of worded awkwardly, IMO. "Please be logged in again" should probably be "Please log in again", and "You are forced to be logged off." sounds weird, so it should probably be something like "You have logged off" Or "Your session has expired."
Saying "Your session has expired, please log in again." flows much better.