Hi @abzlevelup. I’m experiencing the same thing on several of my sites as well.
This appears to have come up sometime after the release of v5.16.3. I’ve got one site still on v5.16.2.1 and the default month view with no events for that month still loads an empty calendar, but on my staging site, it’s forcing the layout to not appear with the “Latest Past Events” content added below the “no upcoming events” alert message.
