Looks like the error log had maxed out which kills the chat. This happened during the worst possible time because of my real life Christmas holiday craziness for the past week or so which led to me not seeing this problem sooner.
I deleted the log and the chat should be working again. I'm really sorry about the inconvenience. I' will try to set up a system that notifies me on my phone when forums, wiki or chat goes offline so that I can fix them as soon as it happens.