leafletjs and fullcalendar never loading


I have these two files never generated in the views_simplecache relevant directory. I have a fullcalendar.js autogenerated but not a fullcalendar filev with no extension and this leads to my event calendar showing like in this page https://conf.tn/event/calendar

I created a fulcalendar symlink to fullcalendar.js but still the problem exists maybe because leafletjs is also needed to properly display the view. I didn't find any leafletjs or leaflet.js in the Elgg subdirectories.

My Elgg version is 3.3.21.