Pi-hole Web Interface unavailable, Error 503

look like PHP is not working correctly.

could you try following

dietpi-software reinstall 89

than reboot your system andpost following once back online

systemctl status php7.3-fpm.service
systemctl status lighttpd.service
cat /var/log/lighttpd/error.log

Done this ;

dietpi-software reinstall 89

And after the reboot it’s working again, thank you very much !

Do you need this :

systemctl status php7.3-fpm.service
systemctl status lighttpd.service
cat /var/log/lighttpd/error.log

?

no that’s fine if it is working again :slight_smile: