I went into /etc/pihole/gravity.list and located the troublesome domains. I used the feature in the admin panel to pinpoint what list was giving me issues. This fixed it for me.
I tried to replicate what you are doing and when I run pihole -t, basically, it runs forever. I tried to run the update list on the web admin and nothing worked. So, I can't duplicate what you are trying, but I'm also trying that on the Pi's browser, so I'm going to try to duplicate it when I head home shortly.
Ran it now that I'm home and I didn't get any errors like you are showing on yours. But I'm still getting the same error. I have also submitted my token to one of the developers on Reddit as well...
Thanks Mcat12, I flushed the log files and I'll wait to see if I have the same issue tomorrow, after midnight. Or should this resolve the issue "permanently"?
Yup, ran the update yesterday and this morning I was still having the same issue. So, I ran the flush this morning and my logs are working properly again.