Fullcalendar recurring event with rrule is not working

I am using fullcalendar 4.4.0 and everything working fine except rrule. If i try with simple recurrence, it is working, but rrule recurrence not working. let me share my code The code for generating event is as follows. What is issue here? If anyone has experience, please help me. I am sharing my calendar how it is being showed There is no recurring event here. Example of event data: Answer You need to make sure you include the rrule Javascript library file, and the fullCalendar rrule plugin file, and include the plugin in your calendar config. You also need to