I had this possibility to upload the featured image, but i lost it a fews days ago - button open the search but no integrate the image - with your template "gazette"
A problem of compatibility with joomla 3.9.10 ????
compare
https://viesaineetzen.com/index.php/ete/la-groseille-superfruit-de-l-ete
with
https://viesaineetzen.com/index.php/ete/le-cassis-un-superfruit who had no problem