Please see How to Get Support: https://redmine.lighttpd.net/boards/2/topics/5
There is a pattern in your bug reports which omits important information. > Sep 06 23:53:27 hostname lighttpd[28815]: 2025-09-06 23:53:27: > (fdevent.c.946) fdevent_load_file() > /var/lib/dehydrated/certs/hostname/fullchain.pem: Permission denied It appears that you have scripts independent from lighttpd which run 'dehydrated' to obtain your certificates. If lighttpd (after dropping privileges to users www-data) does not have privileges to read the certificates, then you must restart the lighttpd service (which on Debian starts as root) rather than asking lighttpd to reload certificates gracefully. This is a permission problem on your system, due to your configuration, and lighttpd running as user www-data is unable to fix that problem itself. As you have shown from your logs, when you reload lighttpd, lighttpd will instead exit and then systemd will restart lighttpd. The end result is that your system is still working, though with a blip of service interruption while lighttpd is restarted. You can fix that by fixing permissions on the files obtained by dehydrated, or you may schedule to update certificates and restart lighttpd at a convenient time. Cheers, Glenn
