From GUI: Tail pihole.log should display pihole entries. From CLI: pihole -t should show entries.
Actual Behaviour:
Nothing is being logged to pihole.log. Viewing both from the GUI and SSH (pihole -t / tail /var/log/pihole.log). Log shows entries from before the upgrade.
Debug Token:
Use netcat.
I've never tried the debug before.. Not sure why this isn't working.. I also tried pihole -r which didn't work.
I generated the debug log but it would not upload.
For some reason /var/log/pihole.log randomly started working again just now.. And this was even after pihole -r followed by a reboot. The previous entries in the pihole log are all from before the upgrade two days ago.
Maybe Pi-hole knew I was posting here so it decided to start working again. ¯_(ツ)_/¯
This generally indicates that there is a problem with domain name resolution. Please generate a log and upload it to verify that you can. Post the token and we'll peek under the hood.