David Ng said about 4 years ago on FullCalendar Events and Scheduling :
Dear Kobaltz ,

I did the calendar in my Rails 5.2 app.  However, when I try to do fullCalendar again in Rails 6 with web pack, things are broken down.  I simply can't get it work.  I got some funny errors and simply can't get the Model right.

Any chance to redo fullCalendar for Rails 6 ?

David