Missing screw?

today when I started a new print there was suddenly a short clatter / knock. I paused the print and checked my A1 printer. The only thing which seems strange to me is a missing screw on the rear base plate near the Y-axis.

Should there be a screw in this hole?

Looks like there was a fastener in there at some point. You can see the scuffing around the hole. Also, the screw hole to the right of it looks like it’s propagating a crack. You might want to check that too.