i\'m using jQuery fullcalendar on a ReactJs component.
i have a on the render method
and on componentD
I was having the same issue after upgrading fullCalendar.js from v2.6.1 to v3.4.0
In my case the Issue resolved by including fullcalendar.js & scheduler.min.js after moment.js
I ended up dumping the jquery full calendar in favor of react-big-calendar. jQuery not playing well with react.
I found using fullcalander.js rather than fullcalendar.min.js fixed this problem for me. Have not investigated why though.
Probably a locale problem. I had the same issue as I was using pt-br.
I solved mine by removing the line
<script src='../fullcalendar.min.js'></script>
and leaving the
<script src='../fullcalendar.js'></script>