Support for the WordPress Calendar plugin
When trying to add the Upcoming Events widget in the WordPress customizer, it appears to add the widget on the preview screen, but I get an error saying "Invalid value." and nothing else. If I try to publish the page, I get an error "Unable to save due to 1 invalid setting". I'm using Version 1.3.13 of Calendar and WordPress 5.1.1. Otherwise Calendar is working. Any ideas?