[eNewsletter] Newsletter not sending

Dear support team.

This morning I tried to send a newsletter, using Cron. This is something I do once to twice a week.

But today, it doesn't work : https://i.postimg.cc/XqM51LDM/1.png

I've enabled support access : https://blog.defi-ecologique.com/wp-admin/admin.php?page=newsletters&newsletter_action=send_newsletter&newsletter_id=33

Regards,
Greg