Fullcalendar is incompatible with Date Recur 3.x

Problem/Motivation

I see two open issues for Recurr 2.x but now only 3.x is available https://www.drupal.org/project/date_recur →

1. Create a date_recur field
2. Install fullcalendar module
3. Create a view that uses fullcalendar display and add the date_recur field created in 1

You will see error
Error: Call to undefined method Drupal\date_recur\Plugin\Field\FieldType\DateRecurItem::getOccurrenceHandler() in Drupal\fullcalendar\Plugin\views\style\FullCalendar->prepareEvents() (line 365 of modules/contrib/fullcalendar/src/Plugin/views/style/FullCalendar.php).

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes