Pihole was running Ok, but after installing Unbound the (install was Ok) next step was to change the upstream DNS server from external source to unbound using the custom upstream server section . (127.0.0.1#5335).
Actual Behaviour:
After clicking save I'm running into error: Failed CORS: null vs 192.168.0.214, , 192.168.0.214, pi.hole, localhost. Every action I do like trying to restart the pihole gives the same error.
Thanks for your reply. I followed the instructions: comment out the line #unbound_conf=/etc/unbound/unbound.conf.d/resolvconf_resolvers.conf
Deleted the file and restart the unbound service.
Unfortunately still the same error : Failed CORS: null vs 192.168.0.214, , 192.168.0.214, pi.hole, localhost