A few weeks ago, we had a snafu caused by a parent theme that was not updated when WordPress was.
What you are looking at is an intermediate step: I’ve removed the offending theme, applied a new one, and started to work on a child theme for STC/SM. It is a work in progress, so please bear with me. You will notice little things changing over the next couple of weeks; I will try not to make it too disorienting.